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19 vulnerabilities found for waitress by agendaless
VAR-202203-0925
Vulnerability from variot - Updated: 2024-11-23 21:24Waitress is a Web Server Gateway Interface server for Python 2 and 3. When using Waitress versions 2.1.0 and prior behind a proxy that does not properly validate the incoming HTTP request matches the RFC7230 standard, Waitress and the frontend proxy may disagree on where one request starts and where it ends. This would allow requests to be smuggled via the front-end proxy to waitress and later behavior. There are two classes of vulnerability that may lead to request smuggling that are addressed by this advisory: The use of Python's int() to parse strings into integers, leading to +10 to be parsed as 10, or 0x01 to be parsed as 1, where as the standard specifies that the string should contain only digits or hex digits; and Waitress does not support chunk extensions, however it was discarding them without validating that they did not contain illegal characters. This vulnerability has been patched in Waitress 2.1.1. A workaround is available. When deploying a proxy in front of waitress, turning on any and all functionality to make sure that the request matches the RFC7230 standard. Certain proxy servers may not have this functionality though and users are encouraged to upgrade to the latest version of waitress instead. Agendaless Consulting of Waitress For products from other vendors, HTTP There is a vulnerability related to request smuggling.Information may be tampered with. No detailed vulnerability details are currently provided. =========================================================================
Ubuntu Security Notice USN-5364-1
April 05, 2022
waitress vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.10
- Ubuntu 20.04 LTS
Summary:
waitress could be made to expose sensitive information if it received a specially crafted request.
Software Description: - waitress: production-quality pure-Python WSGI server (documentation)
Details:
It was discovered that Waitress incorrectly handled certain requests. An attacker could possibly use this issue to expose sensitive information.
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.10: python3-waitress 1.4.4-1.1ubuntu0.1
Ubuntu 20.04 LTS: python3-waitress 1.4.1-1ubuntu0.1
In general, a standard system update will make all the necessary changes. Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
-
Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
-
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
====================================================================
Red Hat Security Advisory
Synopsis: Moderate: OpenShift Container Platform 4.10.10 bug fix and security update Advisory ID: RHSA-2022:1356-01 Product: Red Hat OpenShift Enterprise Advisory URL: https://access.redhat.com/errata/RHSA-2022:1356 Issue date: 2022-04-21 CVE Names: CVE-2022-0778 CVE-2022-21698 CVE-2022-24761 ==================================================================== 1. Summary:
Red Hat OpenShift Container Platform release 4.10.10 is now available with updates to packages and images that fix several bugs and add enhancements.
This release includes a security update for Red Hat OpenShift Container Platform 4.10.
Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- Description:
Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments.
This advisory contains the container images for Red Hat OpenShift Container Platform 4.10.10. See the following advisory for the RPM packages for this release:
https://access.redhat.com/errata/RHBA-2022:1355
Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes:
https://docs.openshift.com/container-platform/4.10/release_notes/ocp-4-10-release-notes.html
Security Fix(es):
- prometheus/client_golang: Denial of service using InstrumentHandlerCounter (CVE-2022-21698)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
You may download the oc tool and use it to inspect release image metadata as follows:
(For x86_64 architecture)
$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.10.10-x86_64
The image digest is sha256:39efe13ef67cb4449f5e6cdd8a26c83c07c6a2ce5d235dfbc3ba58c64418fcf3
(For s390x architecture)
$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.10.10-s390x
The image digest is sha256:49b63b22bc221e29e804fc3cc769c6eff97c655a1f5017f429aa0dad2593a0a8
(For ppc64le architecture)
$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.10.10-ppc64le
The image digest is sha256:0d34e1198679a500a3af7acbdfba7864565f7c4f5367ca428d34dee9a9912c9c
(For aarch64 architecture)
$ oc adm release info quay.io/openshift-release-dev/ocp-release:4.10.10-aarch64
The image digest is sha256:ddf6cb04e74ac88874793a3c0538316c9ac8ff154267984c8a4ea7047913e1db
All OpenShift Container Platform 4.10 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift Console or the CLI oc command. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.10/updating/updating-cluster-cli.html
- Solution:
For OpenShift Container Platform 4.10 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:
https://docs.openshift.com/container-platform/4.10/release_notes/ocp-4-10-release-notes.html
Details on how to access this content are available at https://docs.openshift.com/container-platform/4.10/updating/updating-cluster-cli.html
- Bugs fixed (https://bugzilla.redhat.com/):
2045880 - CVE-2022-21698 prometheus/client_golang: Denial of service using InstrumentHandlerCounter 2050118 - 4.10: oVirt CSI driver should use the trusted CA bundle when cluster proxy is configured 2052414 - Start last run action should contain current user name in the started-by annotation of the PLR 2054404 - ip-reconcile job is failing consistently 2054767 - [ovn] Missing lr-policy-list and snat rules for egressip when new pods are added 2054808 - MetaLLB: Validation Webhook: BGPPeer hold time is allowed to be set to less than 3s 2055661 - migrate loadbalancers from amphora to ovn not working 2057881 - MetalLB: speaker metrics is not updated when deleting a service 2059347 - FSyncControllerDegraded latches True, even after fsync latency recovers on all members 2059945 - MetalLB: Move CI config files to metallb repo from dev-scripts repo 2060362 - Openshift registry starts to segfault after S3 storage configuration 2060586 - [4.10.z] [RFE] use /dev/ptp_hyperv on Azure/AzureStack 2064204 - Cachito request failure with vendor directory is out of sync with go.mod/go.sum 2064988 - Fix the hubUrl docs link in pipeline quicksearch modal 2065488 - ip-reconciler job does not complete, halts node drain 2065832 - oc mirror hangs when processing the Red Hat 4.10 catalog 2067311 - PPT event source is lost when received by the consumer 2067719 - Update channels information link is taking to a 404 error page 2069095 - cluster-autoscaler-default will fail when automated etcd defrag is running on large scale OpenShift Container Platform 4 - Cluster 2069913 - Disabling community tasks is not working 2070131 - Installation of Openshift virtualization fails with error service "hco-webhook-service" not found 2070492 - [4.10.z backport] On OCP 4.10+ using OVNK8s on BM IPI, nodes register as localhost.localdomain 2070525 - [OCPonRHV]- after few days that cluster is alive we got error in storage operator 2071479 - Thanos Querier high CPU and memory usage till OOM 2072191 - [4.10] cluster storage operator AWS credentialsrequest lacks KMS privileges 2072440 - Pipeline builder makes too many (100+) API calls upfront 2072928 - mapi_current_pending_csr is always set to 1 on OpenShift Container Platform
- References:
https://access.redhat.com/security/cve/CVE-2022-0778 https://access.redhat.com/security/cve/CVE-2022-21698 https://access.redhat.com/security/cve/CVE-2022-24761 https://access.redhat.com/security/updates/classification/#moderate
- Contact:
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/
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For the oldstable distribution (buster), this problem has been fixed in version 1.2.0~b2-2+deb10u1.
For the stable distribution (bullseye), this problem has been fixed in version 1.4.4-1.1+deb11u1.
We recommend that you upgrade your waitress packages.
For the detailed security status of waitress please refer to its security tracker page at: https://security-tracker.debian.org/tracker/waitress
Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE-----
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"data": "Waitress is a Web Server Gateway Interface server for Python 2 and 3. When using Waitress versions 2.1.0 and prior behind a proxy that does not properly validate the incoming HTTP request matches the RFC7230 standard, Waitress and the frontend proxy may disagree on where one request starts and where it ends. This would allow requests to be smuggled via the front-end proxy to waitress and later behavior. There are two classes of vulnerability that may lead to request smuggling that are addressed by this advisory: The use of Python\u0027s `int()` to parse strings into integers, leading to `+10` to be parsed as `10`, or `0x01` to be parsed as `1`, where as the standard specifies that the string should contain only digits or hex digits; and Waitress does not support chunk extensions, however it was discarding them without validating that they did not contain illegal characters. This vulnerability has been patched in Waitress 2.1.1. A workaround is available. 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No detailed vulnerability details are currently provided. =========================================================================\nUbuntu Security Notice USN-5364-1\nApril 05, 2022\n\nwaitress vulnerability\n=========================================================================\nA security issue affects these releases of Ubuntu and its derivatives:\n\n- Ubuntu 21.10\n- Ubuntu 20.04 LTS\n\nSummary:\n\nwaitress could be made to expose sensitive information if it received\na specially crafted request. \n\nSoftware Description:\n- waitress: production-quality pure-Python WSGI server (documentation)\n\nDetails:\n\nIt was discovered that Waitress incorrectly handled certain requests. \nAn attacker could possibly use this issue to expose sensitive information. \n\nUpdate instructions:\n\nThe problem can be corrected by updating your system to the following\npackage versions:\n\nUbuntu 21.10:\n python3-waitress 1.4.4-1.1ubuntu0.1\n\nUbuntu 20.04 LTS:\n python3-waitress 1.4.1-1ubuntu0.1\n\nIn general, a standard system update will make all the necessary changes. Solution:\n\nFor details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\n5. Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n==================================================================== \nRed Hat Security Advisory\n\nSynopsis: Moderate: OpenShift Container Platform 4.10.10 bug fix and security update\nAdvisory ID: RHSA-2022:1356-01\nProduct: Red Hat OpenShift Enterprise\nAdvisory URL: https://access.redhat.com/errata/RHSA-2022:1356\nIssue date: 2022-04-21\nCVE Names: CVE-2022-0778 CVE-2022-21698 CVE-2022-24761\n====================================================================\n1. Summary:\n\nRed Hat OpenShift Container Platform release 4.10.10 is now available with\nupdates to packages and images that fix several bugs and add enhancements. \n\nThis release includes a security update for Red Hat OpenShift Container\nPlatform 4.10. \n\nRed Hat Product Security has rated this update as having a security impact\nof Moderate. A Common Vulnerability Scoring System (CVSS) base score, which\ngives a detailed severity rating, is available for each vulnerability from\nthe CVE link(s) in the References section. \n\n2. Description:\n\nRed Hat OpenShift Container Platform is Red Hat\u0027s cloud computing\nKubernetes application platform solution designed for on-premise or private\ncloud deployments. \n\nThis advisory contains the container images for Red Hat OpenShift Container\nPlatform 4.10.10. See the following advisory for the RPM packages for this\nrelease:\n\nhttps://access.redhat.com/errata/RHBA-2022:1355\n\nSpace precludes documenting all of the container images in this advisory. \nSee the following Release Notes documentation, which will be updated\nshortly for this release, for details about these changes:\n\nhttps://docs.openshift.com/container-platform/4.10/release_notes/ocp-4-10-release-notes.html\n\nSecurity Fix(es):\n\n* prometheus/client_golang: Denial of service using\nInstrumentHandlerCounter (CVE-2022-21698)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s)\nlisted in the References section. \n\nYou may download the oc tool and use it to inspect release image metadata\nas follows:\n\n(For x86_64 architecture)\n\n$ oc adm release info\nquay.io/openshift-release-dev/ocp-release:4.10.10-x86_64\n\nThe image digest is\nsha256:39efe13ef67cb4449f5e6cdd8a26c83c07c6a2ce5d235dfbc3ba58c64418fcf3\n\n(For s390x architecture)\n\n$ oc adm release info\nquay.io/openshift-release-dev/ocp-release:4.10.10-s390x\n\nThe image digest is\nsha256:49b63b22bc221e29e804fc3cc769c6eff97c655a1f5017f429aa0dad2593a0a8\n\n(For ppc64le architecture)\n\n$ oc adm release info\nquay.io/openshift-release-dev/ocp-release:4.10.10-ppc64le\n\nThe image digest is\nsha256:0d34e1198679a500a3af7acbdfba7864565f7c4f5367ca428d34dee9a9912c9c\n\n(For aarch64 architecture)\n\n$ oc adm release info\nquay.io/openshift-release-dev/ocp-release:4.10.10-aarch64\n\nThe image digest is\nsha256:ddf6cb04e74ac88874793a3c0538316c9ac8ff154267984c8a4ea7047913e1db\n\nAll OpenShift Container Platform 4.10 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift Console\nor the CLI oc command. Instructions for upgrading a cluster are available\nat\nhttps://docs.openshift.com/container-platform/4.10/updating/updating-cluster-cli.html\n\n3. Solution:\n\nFor OpenShift Container Platform 4.10 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.openshift.com/container-platform/4.10/release_notes/ocp-4-10-release-notes.html\n\nDetails on how to access this content are available at\nhttps://docs.openshift.com/container-platform/4.10/updating/updating-cluster-cli.html\n\n4. Bugs fixed (https://bugzilla.redhat.com/):\n\n2045880 - CVE-2022-21698 prometheus/client_golang: Denial of service using InstrumentHandlerCounter\n2050118 - 4.10: oVirt CSI driver should use the trusted CA bundle when cluster proxy is configured\n2052414 - Start last run action should contain current user name in the started-by annotation of the PLR\n2054404 - ip-reconcile job is failing consistently\n2054767 - [ovn] Missing lr-policy-list and snat rules for egressip when new pods are added\n2054808 - MetaLLB: Validation Webhook: BGPPeer hold time is allowed to be set to less than 3s\n2055661 - migrate loadbalancers from amphora to ovn not working\n2057881 - MetalLB: speaker metrics is not updated when deleting a service\n2059347 - FSyncControllerDegraded latches True, even after fsync latency recovers on all members\n2059945 - MetalLB: Move CI config files to metallb repo from dev-scripts repo\n2060362 - Openshift registry starts to segfault after S3 storage configuration\n2060586 - [4.10.z] [RFE] use /dev/ptp_hyperv on Azure/AzureStack\n2064204 - Cachito request failure with vendor directory is out of sync with go.mod/go.sum\n2064988 - Fix the hubUrl docs link in pipeline quicksearch modal\n2065488 - ip-reconciler job does not complete, halts node drain\n2065832 - oc mirror hangs when processing the Red Hat 4.10 catalog\n2067311 - PPT event source is lost when received by the consumer\n2067719 - Update channels information link is taking to a 404 error page\n2069095 - cluster-autoscaler-default will fail when automated etcd defrag is running on large scale OpenShift Container Platform 4 - Cluster\n2069913 - Disabling community tasks is not working\n2070131 - Installation of Openshift virtualization fails with error service \"hco-webhook-service\" not found\n2070492 - [4.10.z backport] On OCP 4.10+ using OVNK8s on BM IPI, nodes register as localhost.localdomain\n2070525 - [OCPonRHV]- after few days that cluster is alive we got error in storage operator\n2071479 - Thanos Querier high CPU and memory usage till OOM\n2072191 - [4.10] cluster storage operator AWS credentialsrequest lacks KMS privileges\n2072440 - Pipeline builder makes too many (100+) API calls upfront\n2072928 - mapi_current_pending_csr is always set to 1 on OpenShift Container Platform\n\n5. References:\n\nhttps://access.redhat.com/security/cve/CVE-2022-0778\nhttps://access.redhat.com/security/cve/CVE-2022-21698\nhttps://access.redhat.com/security/cve/CVE-2022-24761\nhttps://access.redhat.com/security/updates/classification/#moderate\n\n6. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2022 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n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\nlYpMfdzvmvo=qbsg\n-----END PGP SIGNATURE-----\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://listman.redhat.com/mailman/listinfo/rhsa-announce\n. \n\nFor the oldstable distribution (buster), this problem has been fixed\nin version 1.2.0~b2-2+deb10u1. \n\nFor the stable distribution (bullseye), this problem has been fixed in\nversion 1.4.4-1.1+deb11u1. \n\nWe recommend that you upgrade your waitress packages. \n\nFor the detailed security status of waitress please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/waitress\n\nFurther information about Debian Security Advisories, how to apply\nthese updates to your system and frequently asked questions can be\nfound at: https://www.debian.org/security/\n\nMailing list: debian-security-announce@lists.debian.org\n-----BEGIN PGP SIGNATURE-----\n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\nDE5bBtA+ViL7Oqqo0AkAy1rLh6gTMnmwLBKz6okgCkgRQYefrrg=\n=zbZ1\n-----END PGP SIGNATURE-----\n",
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CVE-2024-49769 (GCVE-0-2024-49769)
Vulnerability from nvd – Published: 2024-10-29 14:18 – Updated: 2024-11-17 00:11
VLAI?
Title
Waitress has a denial of service leading to high CPU usage/resource exhaustion
Summary
Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the connection before waitress has had the opportunity to call getpeername() waitress won't correctly clean up the connection leading to the main thread attempting to write to a socket that no longer exists, but not removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write function. A remote attacker could run waitress out of available sockets with very little resources required. Waitress 3.0.1 contains fixes that remove the race condition.
Severity ?
7.5 (High)
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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CVE-2024-49768 (GCVE-0-2024-49768)
Vulnerability from nvd – Published: 2024-10-29 14:32 – Updated: 2024-10-29 14:56
VLAI?
Title
Waitress has request processing race condition in HTTP pipelining with invalid first request
Summary
Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recv_bytes (defaults to 8192) long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled (default) we won't read any more requests, and when the first request fails due to a parsing error, we simply close the connection. However when request lookahead is enabled, it is possible to process and receive the first request, start sending the error message back to the client while we read the next request and queue it. This will allow the secondary request to be serviced by the worker thread while the connection should be closed. Waitress 3.0.1 fixes the race condition. As a workaround, disable channel_request_lookahead, this is set to 0 by default disabling this feature.
Severity ?
9.1 (Critical)
CWE
Assigner
References
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|---|---|---|---|---|---|---|---|---|
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CVE-2022-31015 (GCVE-0-2022-31015)
Vulnerability from nvd – Published: 2022-05-31 22:50 – Updated: 2025-04-22 17:55
VLAI?
Title
Uncaught Exception (due to a data race) leads to process termination in Waitress
Summary
Waitress is a Web Server Gateway Interface server for Python 2 and 3. Waitress versions 2.1.0 and 2.1.1 may terminate early due to a thread closing a socket while the main thread is about to call select(). This will lead to the main thread raising an exception that is not handled and then causing the entire application to be killed. This issue has been fixed in Waitress 2.1.2 by no longer allowing the WSGI thread to close the socket. Instead, that is always delegated to the main thread. There is no work-around for this issue. However, users using waitress behind a reverse proxy server are less likely to have issues if the reverse proxy always reads the full response.
Severity ?
6.5 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||||||||
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CVE-2022-24761 (GCVE-0-2022-24761)
Vulnerability from nvd – Published: 2022-03-17 12:40 – Updated: 2025-04-23 18:46
VLAI?
Title
HTTP Request Smuggling in waitress
Summary
Waitress is a Web Server Gateway Interface server for Python 2 and 3. When using Waitress versions 2.1.0 and prior behind a proxy that does not properly validate the incoming HTTP request matches the RFC7230 standard, Waitress and the frontend proxy may disagree on where one request starts and where it ends. This would allow requests to be smuggled via the front-end proxy to waitress and later behavior. There are two classes of vulnerability that may lead to request smuggling that are addressed by this advisory: The use of Python's `int()` to parse strings into integers, leading to `+10` to be parsed as `10`, or `0x01` to be parsed as `1`, where as the standard specifies that the string should contain only digits or hex digits; and Waitress does not support chunk extensions, however it was discarding them without validating that they did not contain illegal characters. This vulnerability has been patched in Waitress 2.1.1. A workaround is available. When deploying a proxy in front of waitress, turning on any and all functionality to make sure that the request matches the RFC7230 standard. Certain proxy servers may not have this functionality though and users are encouraged to upgrade to the latest version of waitress instead.
Severity ?
7.5 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
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CVE-2020-5236 (GCVE-0-2020-5236)
Vulnerability from nvd – Published: 2020-02-04 03:05 – Updated: 2024-08-04 08:22
VLAI?
Title
Catastrophic backtracking in regex allows Denial of Service in Waitress
Summary
Waitress version 1.4.2 allows a DOS attack When waitress receives a header that contains invalid characters. When a header like "Bad-header: xxxxxxxxxxxxxxx\x10" is received, it will cause the regular expression engine to catastrophically backtrack causing the process to use 100% CPU time and blocking any other interactions. This allows an attacker to send a single request with an invalid header and take the service offline. This issue was introduced in version 1.4.2 when the regular expression was updated to attempt to match the behaviour required by errata associated with RFC7230. The regular expression that is used to validate incoming headers has been updated in version 1.4.3, it is recommended that people upgrade to the new version of Waitress as soon as possible.
Severity ?
5.7 (Medium)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
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CVE-2019-16792 (GCVE-0-2019-16792)
Vulnerability from nvd – Published: 2020-01-22 18:30 – Updated: 2024-08-05 01:24
VLAI?
Title
HTTP Request Smuggling: Content-Length Sent Twice in Waitress
Summary
Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice. Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally. If two Content-Length headers are sent in a single request, Waitress would treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining. This issue is fixed in Waitress 1.4.0.
Severity ?
7.1 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
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CVE-2019-16789 (GCVE-0-2019-16789)
Vulnerability from nvd – Published: 2019-12-26 16:40 – Updated: 2024-08-05 01:24
VLAI?
Title
HTTP Request Smuggling in Waitress: Invalid whitespace characters in headers
Summary
In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Specially crafted requests containing special whitespace characters in the Transfer-Encoding header would get parsed by Waitress as being a chunked request, but a front-end server would use the Content-Length instead as the Transfer-Encoding header is considered invalid due to containing invalid characters. If a front-end server does HTTP pipelining to a backend Waitress server this could lead to HTTP request splitting which may lead to potential cache poisoning or unexpected information disclosure. This issue is fixed in Waitress 1.4.1 through more strict HTTP field validation.
Severity ?
7.1 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2019-16786 (GCVE-0-2019-16786)
Vulnerability from nvd – Published: 2019-12-20 23:00 – Updated: 2024-08-05 01:24
VLAI?
Title
HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress
Summary
Waitress through version 1.3.1 would parse the Transfer-Encoding header and only look for a single string value, if that value was not chunked it would fall through and use the Content-Length header instead. According to the HTTP standard Transfer-Encoding should be a comma separated list, with the inner-most encoding first, followed by any further transfer codings, ending with chunked. Requests sent with: "Transfer-Encoding: gzip, chunked" would incorrectly get ignored, and the request would use a Content-Length header instead to determine the body size of the HTTP message. This could allow for Waitress to treat a single request as multiple requests in the case of HTTP pipelining. This issue is fixed in Waitress 1.4.0.
Severity ?
7.1 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
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CVE-2019-16785 (GCVE-0-2019-16785)
Vulnerability from nvd – Published: 2019-12-20 23:00 – Updated: 2024-08-05 01:24
VLAI?
Title
HTTP Request Smuggling: LF vs CRLF handling in Waitress
Summary
Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end server does not parse header fields with an LF the same way as it does those with a CRLF it can lead to the front-end and the back-end server parsing the same HTTP message in two different ways. This can lead to a potential for HTTP request smuggling/splitting whereby Waitress may see two requests while the front-end server only sees a single HTTP message. This issue is fixed in Waitress 1.4.0.
Severity ?
7.1 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||
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CVE-2024-49768 (GCVE-0-2024-49768)
Vulnerability from cvelistv5 – Published: 2024-10-29 14:32 – Updated: 2024-10-29 14:56
VLAI?
Title
Waitress has request processing race condition in HTTP pipelining with invalid first request
Summary
Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recv_bytes (defaults to 8192) long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled (default) we won't read any more requests, and when the first request fails due to a parsing error, we simply close the connection. However when request lookahead is enabled, it is possible to process and receive the first request, start sending the error message back to the client while we read the next request and queue it. This will allow the secondary request to be serviced by the worker thread while the connection should be closed. Waitress 3.0.1 fixes the race condition. As a workaround, disable channel_request_lookahead, this is set to 0 by default disabling this feature.
Severity ?
9.1 (Critical)
CWE
Assigner
References
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CVE-2024-49769 (GCVE-0-2024-49769)
Vulnerability from cvelistv5 – Published: 2024-10-29 14:18 – Updated: 2024-11-17 00:11
VLAI?
Title
Waitress has a denial of service leading to high CPU usage/resource exhaustion
Summary
Waitress is a Web Server Gateway Interface server for Python 2 and 3. When a remote client closes the connection before waitress has had the opportunity to call getpeername() waitress won't correctly clean up the connection leading to the main thread attempting to write to a socket that no longer exists, but not removing it from the list of sockets to attempt to process. This leads to a busy-loop calling the write function. A remote attacker could run waitress out of available sockets with very little resources required. Waitress 3.0.1 contains fixes that remove the race condition.
Severity ?
7.5 (High)
CWE
- CWE-772 - Missing Release of Resource after Effective Lifetime
Assigner
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CVE-2022-31015 (GCVE-0-2022-31015)
Vulnerability from cvelistv5 – Published: 2022-05-31 22:50 – Updated: 2025-04-22 17:55
VLAI?
Title
Uncaught Exception (due to a data race) leads to process termination in Waitress
Summary
Waitress is a Web Server Gateway Interface server for Python 2 and 3. Waitress versions 2.1.0 and 2.1.1 may terminate early due to a thread closing a socket while the main thread is about to call select(). This will lead to the main thread raising an exception that is not handled and then causing the entire application to be killed. This issue has been fixed in Waitress 2.1.2 by no longer allowing the WSGI thread to close the socket. Instead, that is always delegated to the main thread. There is no work-around for this issue. However, users using waitress behind a reverse proxy server are less likely to have issues if the reverse proxy always reads the full response.
Severity ?
6.5 (Medium)
CWE
Assigner
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CVE-2022-24761 (GCVE-0-2022-24761)
Vulnerability from cvelistv5 – Published: 2022-03-17 12:40 – Updated: 2025-04-23 18:46
VLAI?
Title
HTTP Request Smuggling in waitress
Summary
Waitress is a Web Server Gateway Interface server for Python 2 and 3. When using Waitress versions 2.1.0 and prior behind a proxy that does not properly validate the incoming HTTP request matches the RFC7230 standard, Waitress and the frontend proxy may disagree on where one request starts and where it ends. This would allow requests to be smuggled via the front-end proxy to waitress and later behavior. There are two classes of vulnerability that may lead to request smuggling that are addressed by this advisory: The use of Python's `int()` to parse strings into integers, leading to `+10` to be parsed as `10`, or `0x01` to be parsed as `1`, where as the standard specifies that the string should contain only digits or hex digits; and Waitress does not support chunk extensions, however it was discarding them without validating that they did not contain illegal characters. This vulnerability has been patched in Waitress 2.1.1. A workaround is available. When deploying a proxy in front of waitress, turning on any and all functionality to make sure that the request matches the RFC7230 standard. Certain proxy servers may not have this functionality though and users are encouraged to upgrade to the latest version of waitress instead.
Severity ?
7.5 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
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CVE-2020-5236 (GCVE-0-2020-5236)
Vulnerability from cvelistv5 – Published: 2020-02-04 03:05 – Updated: 2024-08-04 08:22
VLAI?
Title
Catastrophic backtracking in regex allows Denial of Service in Waitress
Summary
Waitress version 1.4.2 allows a DOS attack When waitress receives a header that contains invalid characters. When a header like "Bad-header: xxxxxxxxxxxxxxx\x10" is received, it will cause the regular expression engine to catastrophically backtrack causing the process to use 100% CPU time and blocking any other interactions. This allows an attacker to send a single request with an invalid header and take the service offline. This issue was introduced in version 1.4.2 when the regular expression was updated to attempt to match the behaviour required by errata associated with RFC7230. The regular expression that is used to validate incoming headers has been updated in version 1.4.3, it is recommended that people upgrade to the new version of Waitress as soon as possible.
Severity ?
5.7 (Medium)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
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CVE-2019-16792 (GCVE-0-2019-16792)
Vulnerability from cvelistv5 – Published: 2020-01-22 18:30 – Updated: 2024-08-05 01:24
VLAI?
Title
HTTP Request Smuggling: Content-Length Sent Twice in Waitress
Summary
Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice. Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally. If two Content-Length headers are sent in a single request, Waitress would treat the request as having no body, thereby treating the body of the request as a new request in HTTP pipelining. This issue is fixed in Waitress 1.4.0.
Severity ?
7.1 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
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CVE-2019-16789 (GCVE-0-2019-16789)
Vulnerability from cvelistv5 – Published: 2019-12-26 16:40 – Updated: 2024-08-05 01:24
VLAI?
Title
HTTP Request Smuggling in Waitress: Invalid whitespace characters in headers
Summary
In Waitress through version 1.4.0, if a proxy server is used in front of waitress, an invalid request may be sent by an attacker that bypasses the front-end and is parsed differently by waitress leading to a potential for HTTP request smuggling. Specially crafted requests containing special whitespace characters in the Transfer-Encoding header would get parsed by Waitress as being a chunked request, but a front-end server would use the Content-Length instead as the Transfer-Encoding header is considered invalid due to containing invalid characters. If a front-end server does HTTP pipelining to a backend Waitress server this could lead to HTTP request splitting which may lead to potential cache poisoning or unexpected information disclosure. This issue is fixed in Waitress 1.4.1 through more strict HTTP field validation.
Severity ?
7.1 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
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CVE-2019-16785 (GCVE-0-2019-16785)
Vulnerability from cvelistv5 – Published: 2019-12-20 23:00 – Updated: 2024-08-05 01:24
VLAI?
Title
HTTP Request Smuggling: LF vs CRLF handling in Waitress
Summary
Waitress through version 1.3.1 implemented a "MAY" part of the RFC7230 which states: "Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR." Unfortunately if a front-end server does not parse header fields with an LF the same way as it does those with a CRLF it can lead to the front-end and the back-end server parsing the same HTTP message in two different ways. This can lead to a potential for HTTP request smuggling/splitting whereby Waitress may see two requests while the front-end server only sees a single HTTP message. This issue is fixed in Waitress 1.4.0.
Severity ?
7.1 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
| URL | Tags | |||||||||||||||||||||||||
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CVE-2019-16786 (GCVE-0-2019-16786)
Vulnerability from cvelistv5 – Published: 2019-12-20 23:00 – Updated: 2024-08-05 01:24
VLAI?
Title
HTTP Request Smuggling: Invalid Transfer-Encoding in Waitress
Summary
Waitress through version 1.3.1 would parse the Transfer-Encoding header and only look for a single string value, if that value was not chunked it would fall through and use the Content-Length header instead. According to the HTTP standard Transfer-Encoding should be a comma separated list, with the inner-most encoding first, followed by any further transfer codings, ending with chunked. Requests sent with: "Transfer-Encoding: gzip, chunked" would incorrectly get ignored, and the request would use a Content-Length header instead to determine the body size of the HTTP message. This could allow for Waitress to treat a single request as multiple requests in the case of HTTP pipelining. This issue is fixed in Waitress 1.4.0.
Severity ?
7.1 (High)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Assigner
References
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