VAR-202109-1803
Vulnerability from variot - Updated: 2025-12-22 22:24ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier. The server is fast, reliable and extensible through a simple API. An attacker could exploit this vulnerability to write malicious content and execute it. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
===================================================================== Red Hat Security Advisory
Synopsis: Moderate: httpd24-httpd security and bug fix update Advisory ID: RHSA-2022:6753-01 Product: Red Hat Software Collections Advisory URL: https://access.redhat.com/errata/RHSA-2022:6753 Issue date: 2022-09-29 CVE Names: CVE-2021-33193 CVE-2021-34798 CVE-2021-36160 CVE-2021-39275 CVE-2021-44224 CVE-2022-22719 CVE-2022-22721 CVE-2022-23943 CVE-2022-26377 CVE-2022-28614 CVE-2022-28615 CVE-2022-29404 CVE-2022-30522 CVE-2022-30556 CVE-2022-31813 =====================================================================
- Summary:
An update for httpd24-httpd is now available for Red Hat Software Collections.
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.
- Relevant releases/architectures:
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64le, s390x, x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64
Security Fix(es):
-
httpd: mod_sed: Read/write beyond bounds (CVE-2022-23943)
-
httpd: Request splitting via HTTP/2 method injection and mod_proxy (CVE-2021-33193)
-
httpd: NULL pointer dereference via malformed requests (CVE-2021-34798)
-
httpd: mod_proxy_uwsgi: out-of-bounds read via a crafted request uri-path (CVE-2021-36160)
-
httpd: Out-of-bounds write in ap_escape_quotes() via malicious input (CVE-2021-39275)
-
httpd: possible NULL dereference or SSRF in forward proxy configurations (CVE-2021-44224)
-
httpd: mod_lua: Use of uninitialized value of in r:parsebody (CVE-2022-22719)
-
httpd: core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody (CVE-2022-22721)
-
httpd: mod_proxy_ajp: Possible request smuggling (CVE-2022-26377)
-
httpd: mod_lua: DoS in r:parsebody (CVE-2022-29404)
-
httpd: mod_sed: DoS vulnerability (CVE-2022-30522)
-
httpd: mod_proxy: X-Forwarded-For dropped by hop-by-hop mechanism (CVE-2022-31813)
-
httpd: out-of-bounds read via ap_rwrite() (CVE-2022-28614)
-
httpd: out-of-bounds read in ap_strcmp_match() (CVE-2022-28615)
-
httpd: mod_lua: Information disclosure with websockets (CVE-2022-30556)
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.
Bug Fix(es):
- proxy rewrite to unix socket fails with CVE-2021-40438 fix (BZ#2022319)
Additional changes:
- To fix CVE-2022-29404, the default value for the "LimitRequestBody" directive in the Apache HTTP Server has been changed from 0 (unlimited) to 1 GiB.
On systems where the value of "LimitRequestBody" is not explicitly specified in an httpd configuration file, updating the httpd package sets "LimitRequestBody" to the default value of 1 GiB. As a consequence, if the total size of the HTTP request body exceeds this 1 GiB default limit, httpd returns the 413 Request Entity Too Large error code.
If the new default allowed size of an HTTP request message body is insufficient for your use case, update your httpd configuration files within the respective context (server, per-directory, per-file, or per-location) and set your preferred limit in bytes. For example, to set a new 2 GiB limit, use:
LimitRequestBody 2147483648
Systems already configured to use any explicit value for the "LimitRequestBody" directive are unaffected by this change.
- 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
After installing the updated packages, the httpd daemon will be restarted automatically.
- Bugs fixed (https://bugzilla.redhat.com/):
1966728 - CVE-2021-33193 httpd: Request splitting via HTTP/2 method injection and mod_proxy 2005119 - CVE-2021-39275 httpd: Out-of-bounds write in ap_escape_quotes() via malicious input 2005124 - CVE-2021-36160 httpd: mod_proxy_uwsgi: out-of-bounds read via a crafted request uri-path 2005128 - CVE-2021-34798 httpd: NULL pointer dereference via malformed requests 2034672 - CVE-2021-44224 httpd: possible NULL dereference or SSRF in forward proxy configurations 2064319 - CVE-2022-23943 httpd: mod_sed: Read/write beyond bounds 2064320 - CVE-2022-22721 httpd: core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody 2064322 - CVE-2022-22719 httpd: mod_lua: Use of uninitialized value of in r:parsebody 2094997 - CVE-2022-26377 httpd: mod_proxy_ajp: Possible request smuggling 2095002 - CVE-2022-28614 httpd: out-of-bounds read via ap_rwrite() 2095006 - CVE-2022-28615 httpd: out-of-bounds read in ap_strcmp_match() 2095012 - CVE-2022-29404 httpd: mod_lua: DoS in r:parsebody 2095015 - CVE-2022-30522 httpd: mod_sed: DoS vulnerability 2095018 - CVE-2022-30556 httpd: mod_lua: Information disclosure with websockets 2095020 - CVE-2022-31813 httpd: mod_proxy: X-Forwarded-For dropped by hop-by-hop mechanism
- Package List:
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7):
Source: httpd24-httpd-2.4.34-23.el7.5.src.rpm
noarch: httpd24-httpd-manual-2.4.34-23.el7.5.noarch.rpm
ppc64le: httpd24-httpd-2.4.34-23.el7.5.ppc64le.rpm httpd24-httpd-debuginfo-2.4.34-23.el7.5.ppc64le.rpm httpd24-httpd-devel-2.4.34-23.el7.5.ppc64le.rpm httpd24-httpd-tools-2.4.34-23.el7.5.ppc64le.rpm httpd24-mod_ldap-2.4.34-23.el7.5.ppc64le.rpm httpd24-mod_proxy_html-2.4.34-23.el7.5.ppc64le.rpm httpd24-mod_session-2.4.34-23.el7.5.ppc64le.rpm httpd24-mod_ssl-2.4.34-23.el7.5.ppc64le.rpm
s390x: httpd24-httpd-2.4.34-23.el7.5.s390x.rpm httpd24-httpd-debuginfo-2.4.34-23.el7.5.s390x.rpm httpd24-httpd-devel-2.4.34-23.el7.5.s390x.rpm httpd24-httpd-tools-2.4.34-23.el7.5.s390x.rpm httpd24-mod_ldap-2.4.34-23.el7.5.s390x.rpm httpd24-mod_proxy_html-2.4.34-23.el7.5.s390x.rpm httpd24-mod_session-2.4.34-23.el7.5.s390x.rpm httpd24-mod_ssl-2.4.34-23.el7.5.s390x.rpm
x86_64: httpd24-httpd-2.4.34-23.el7.5.x86_64.rpm httpd24-httpd-debuginfo-2.4.34-23.el7.5.x86_64.rpm httpd24-httpd-devel-2.4.34-23.el7.5.x86_64.rpm httpd24-httpd-tools-2.4.34-23.el7.5.x86_64.rpm httpd24-mod_ldap-2.4.34-23.el7.5.x86_64.rpm httpd24-mod_proxy_html-2.4.34-23.el7.5.x86_64.rpm httpd24-mod_session-2.4.34-23.el7.5.x86_64.rpm httpd24-mod_ssl-2.4.34-23.el7.5.x86_64.rpm
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7):
Source: httpd24-httpd-2.4.34-23.el7.5.src.rpm
noarch: httpd24-httpd-manual-2.4.34-23.el7.5.noarch.rpm
x86_64: httpd24-httpd-2.4.34-23.el7.5.x86_64.rpm httpd24-httpd-debuginfo-2.4.34-23.el7.5.x86_64.rpm httpd24-httpd-devel-2.4.34-23.el7.5.x86_64.rpm httpd24-httpd-tools-2.4.34-23.el7.5.x86_64.rpm httpd24-mod_ldap-2.4.34-23.el7.5.x86_64.rpm httpd24-mod_proxy_html-2.4.34-23.el7.5.x86_64.rpm httpd24-mod_session-2.4.34-23.el7.5.x86_64.rpm httpd24-mod_ssl-2.4.34-23.el7.5.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
- References:
https://access.redhat.com/security/cve/CVE-2021-33193 https://access.redhat.com/security/cve/CVE-2021-34798 https://access.redhat.com/security/cve/CVE-2021-36160 https://access.redhat.com/security/cve/CVE-2021-39275 https://access.redhat.com/security/cve/CVE-2021-44224 https://access.redhat.com/security/cve/CVE-2022-22719 https://access.redhat.com/security/cve/CVE-2022-22721 https://access.redhat.com/security/cve/CVE-2022-23943 https://access.redhat.com/security/cve/CVE-2022-26377 https://access.redhat.com/security/cve/CVE-2022-28614 https://access.redhat.com/security/cve/CVE-2022-28615 https://access.redhat.com/security/cve/CVE-2022-29404 https://access.redhat.com/security/cve/CVE-2022-30522 https://access.redhat.com/security/cve/CVE-2022-30556 https://access.redhat.com/security/cve/CVE-2022-31813 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/articles/6975397
- Contact:
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2022 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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For the oldstable distribution (buster), these problems have been fixed in version 2.4.38-3+deb10u6.
For the stable distribution (bullseye), these problems have been fixed in version 2.4.51-1~deb11u1.
We recommend that you upgrade your apache2 packages.
For the detailed security status of apache2 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/apache2
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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- This software, such as Apache HTTP Server, is common to multiple JBoss middleware products, and is packaged under Red Hat JBoss Core Services to allow for faster distribution of updates, and for a more consistent update experience.
This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.51 serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.37 Service Pack 10, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. ========================================================================== Ubuntu Security Notice USN-5090-1 September 27, 2021
apache2 vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.04
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
Several security issues were fixed in Apache HTTP Server. A remote attacker could possibly use this issue to perform request splitting or cache poisoning attacks. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. (CVE-2021-34798)
Li Zhi Xin discovered that the Apache mod_proxy_uwsgi module incorrectly handled certain request uri-paths. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. This issue only affected Ubuntu 20.04 LTS and Ubuntu 21.04. If the server was configured with third-party modules, a remote attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-39275)
It was discovered that the Apache mod_proxy module incorrectly handled certain request uri-paths. A remote attacker could possibly use this issue to cause the server to forward requests to arbitrary origin servers. (CVE-2021-40438)
Update instructions:
The problem can be corrected by updating your system to the following package versions:
Ubuntu 21.04: apache2 2.4.46-4ubuntu1.2 apache2-bin 2.4.46-4ubuntu1.2
Ubuntu 20.04 LTS: apache2 2.4.41-4ubuntu3.5 apache2-bin 2.4.41-4ubuntu3.5
Ubuntu 18.04 LTS: apache2 2.4.29-1ubuntu4.17 apache2-bin 2.4.29-1ubuntu4.17
In general, a standard system update will make all the necessary changes
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"data": "ap_escape_quotes() may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier. The server is fast, reliable and extensible through a simple API. An attacker could exploit this vulnerability to write malicious content and execute it. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n=====================================================================\n Red Hat Security Advisory\n\nSynopsis: Moderate: httpd24-httpd security and bug fix update\nAdvisory ID: RHSA-2022:6753-01\nProduct: Red Hat Software Collections\nAdvisory URL: https://access.redhat.com/errata/RHSA-2022:6753\nIssue date: 2022-09-29\nCVE Names: CVE-2021-33193 CVE-2021-34798 CVE-2021-36160 \n CVE-2021-39275 CVE-2021-44224 CVE-2022-22719 \n CVE-2022-22721 CVE-2022-23943 CVE-2022-26377 \n CVE-2022-28614 CVE-2022-28615 CVE-2022-29404 \n CVE-2022-30522 CVE-2022-30556 CVE-2022-31813 \n=====================================================================\n\n1. Summary:\n\nAn update for httpd24-httpd is now available for Red Hat Software\nCollections. \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. Relevant releases/architectures:\n\nRed Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) - noarch, ppc64le, s390x, x86_64\nRed Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) - noarch, x86_64\n\n3. \n\nSecurity Fix(es):\n\n* httpd: mod_sed: Read/write beyond bounds (CVE-2022-23943)\n\n* httpd: Request splitting via HTTP/2 method injection and mod_proxy\n(CVE-2021-33193)\n\n* httpd: NULL pointer dereference via malformed requests (CVE-2021-34798)\n\n* httpd: mod_proxy_uwsgi: out-of-bounds read via a crafted request uri-path\n(CVE-2021-36160)\n\n* httpd: Out-of-bounds write in ap_escape_quotes() via malicious input\n(CVE-2021-39275)\n\n* httpd: possible NULL dereference or SSRF in forward proxy configurations\n(CVE-2021-44224)\n\n* httpd: mod_lua: Use of uninitialized value of in r:parsebody\n(CVE-2022-22719)\n\n* httpd: core: Possible buffer overflow with very large or unlimited\nLimitXMLRequestBody (CVE-2022-22721)\n\n* httpd: mod_proxy_ajp: Possible request smuggling (CVE-2022-26377)\n\n* httpd: mod_lua: DoS in r:parsebody (CVE-2022-29404)\n\n* httpd: mod_sed: DoS vulnerability (CVE-2022-30522)\n\n* httpd: mod_proxy: X-Forwarded-For dropped by hop-by-hop mechanism\n(CVE-2022-31813)\n\n* httpd: out-of-bounds read via ap_rwrite() (CVE-2022-28614)\n\n* httpd: out-of-bounds read in ap_strcmp_match() (CVE-2022-28615)\n\n* httpd: mod_lua: Information disclosure with websockets (CVE-2022-30556)\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) listed in the References section. \n\nBug Fix(es):\n\n* proxy rewrite to unix socket fails with CVE-2021-40438 fix (BZ#2022319)\n\nAdditional changes:\n\n* To fix CVE-2022-29404, the default value for the \"LimitRequestBody\"\ndirective in the Apache HTTP Server has been changed from 0 (unlimited) to\n1 GiB. \n\nOn systems where the value of \"LimitRequestBody\" is not explicitly\nspecified in an httpd configuration file, updating the httpd package sets\n\"LimitRequestBody\" to the default value of 1 GiB. As a consequence, if the\ntotal size of the HTTP request body exceeds this 1 GiB default limit, httpd\nreturns the 413 Request Entity Too Large error code. \n\nIf the new default allowed size of an HTTP request message body is\ninsufficient for your use case, update your httpd configuration files\nwithin the respective context (server, per-directory, per-file, or\nper-location) and set your preferred limit in bytes. For example, to set a\nnew 2 GiB limit, use:\n\nLimitRequestBody 2147483648\n\nSystems already configured to use any explicit value for the\n\"LimitRequestBody\" directive are unaffected by this change. \n\n4. 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\nAfter installing the updated packages, the httpd daemon will be restarted\nautomatically. \n\n5. Bugs fixed (https://bugzilla.redhat.com/):\n\n1966728 - CVE-2021-33193 httpd: Request splitting via HTTP/2 method injection and mod_proxy\n2005119 - CVE-2021-39275 httpd: Out-of-bounds write in ap_escape_quotes() via malicious input\n2005124 - CVE-2021-36160 httpd: mod_proxy_uwsgi: out-of-bounds read via a crafted request uri-path\n2005128 - CVE-2021-34798 httpd: NULL pointer dereference via malformed requests\n2034672 - CVE-2021-44224 httpd: possible NULL dereference or SSRF in forward proxy configurations\n2064319 - CVE-2022-23943 httpd: mod_sed: Read/write beyond bounds\n2064320 - CVE-2022-22721 httpd: core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody\n2064322 - CVE-2022-22719 httpd: mod_lua: Use of uninitialized value of in r:parsebody\n2094997 - CVE-2022-26377 httpd: mod_proxy_ajp: Possible request smuggling\n2095002 - CVE-2022-28614 httpd: out-of-bounds read via ap_rwrite()\n2095006 - CVE-2022-28615 httpd: out-of-bounds read in ap_strcmp_match()\n2095012 - CVE-2022-29404 httpd: mod_lua: DoS in r:parsebody\n2095015 - CVE-2022-30522 httpd: mod_sed: DoS vulnerability\n2095018 - CVE-2022-30556 httpd: mod_lua: Information disclosure with websockets\n2095020 - CVE-2022-31813 httpd: mod_proxy: X-Forwarded-For dropped by hop-by-hop mechanism\n\n6. Package List:\n\nRed Hat Software Collections for Red Hat Enterprise Linux Server (v. 7):\n\nSource:\nhttpd24-httpd-2.4.34-23.el7.5.src.rpm\n\nnoarch:\nhttpd24-httpd-manual-2.4.34-23.el7.5.noarch.rpm\n\nppc64le:\nhttpd24-httpd-2.4.34-23.el7.5.ppc64le.rpm\nhttpd24-httpd-debuginfo-2.4.34-23.el7.5.ppc64le.rpm\nhttpd24-httpd-devel-2.4.34-23.el7.5.ppc64le.rpm\nhttpd24-httpd-tools-2.4.34-23.el7.5.ppc64le.rpm\nhttpd24-mod_ldap-2.4.34-23.el7.5.ppc64le.rpm\nhttpd24-mod_proxy_html-2.4.34-23.el7.5.ppc64le.rpm\nhttpd24-mod_session-2.4.34-23.el7.5.ppc64le.rpm\nhttpd24-mod_ssl-2.4.34-23.el7.5.ppc64le.rpm\n\ns390x:\nhttpd24-httpd-2.4.34-23.el7.5.s390x.rpm\nhttpd24-httpd-debuginfo-2.4.34-23.el7.5.s390x.rpm\nhttpd24-httpd-devel-2.4.34-23.el7.5.s390x.rpm\nhttpd24-httpd-tools-2.4.34-23.el7.5.s390x.rpm\nhttpd24-mod_ldap-2.4.34-23.el7.5.s390x.rpm\nhttpd24-mod_proxy_html-2.4.34-23.el7.5.s390x.rpm\nhttpd24-mod_session-2.4.34-23.el7.5.s390x.rpm\nhttpd24-mod_ssl-2.4.34-23.el7.5.s390x.rpm\n\nx86_64:\nhttpd24-httpd-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-httpd-debuginfo-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-httpd-devel-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-httpd-tools-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-mod_ldap-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-mod_proxy_html-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-mod_session-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-mod_ssl-2.4.34-23.el7.5.x86_64.rpm\n\nRed Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7):\n\nSource:\nhttpd24-httpd-2.4.34-23.el7.5.src.rpm\n\nnoarch:\nhttpd24-httpd-manual-2.4.34-23.el7.5.noarch.rpm\n\nx86_64:\nhttpd24-httpd-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-httpd-debuginfo-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-httpd-devel-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-httpd-tools-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-mod_ldap-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-mod_proxy_html-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-mod_session-2.4.34-23.el7.5.x86_64.rpm\nhttpd24-mod_ssl-2.4.34-23.el7.5.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security. Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. References:\n\nhttps://access.redhat.com/security/cve/CVE-2021-33193\nhttps://access.redhat.com/security/cve/CVE-2021-34798\nhttps://access.redhat.com/security/cve/CVE-2021-36160\nhttps://access.redhat.com/security/cve/CVE-2021-39275\nhttps://access.redhat.com/security/cve/CVE-2021-44224\nhttps://access.redhat.com/security/cve/CVE-2022-22719\nhttps://access.redhat.com/security/cve/CVE-2022-22721\nhttps://access.redhat.com/security/cve/CVE-2022-23943\nhttps://access.redhat.com/security/cve/CVE-2022-26377\nhttps://access.redhat.com/security/cve/CVE-2022-28614\nhttps://access.redhat.com/security/cve/CVE-2022-28615\nhttps://access.redhat.com/security/cve/CVE-2022-29404\nhttps://access.redhat.com/security/cve/CVE-2022-30522\nhttps://access.redhat.com/security/cve/CVE-2022-30556\nhttps://access.redhat.com/security/cve/CVE-2022-31813\nhttps://access.redhat.com/security/updates/classification/#moderate\nhttps://access.redhat.com/articles/6975397\n\n8. 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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\n3VmN11LnfT4=\n=pvMD\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), these problems have been fixed\nin version 2.4.38-3+deb10u6. \n\nFor the stable distribution (bullseye), these problems have been fixed in\nversion 2.4.51-1~deb11u1. \n\nWe recommend that you upgrade your apache2 packages. \n\nFor the detailed security status of apache2 please refer to\nits security tracker page at:\nhttps://security-tracker.debian.org/tracker/apache2\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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\nA4CTIoYpK1WnsykAE8M4XFrnOW3lrtse6T8N/dTVMuodElAEhc0=\n=/At6\n-----END PGP SIGNATURE-----\n. 8) - aarch64, noarch, ppc64le, s390x, x86_64\n\n3. This software, such as Apache HTTP Server, is\ncommon to multiple JBoss middleware products, and is packaged under Red Hat\nJBoss Core Services to allow for faster distribution of updates, and for a\nmore consistent update experience. \n\nThis release of Red Hat JBoss Core Services Apache HTTP Server 2.4.51\nserves as a replacement for Red Hat JBoss Core Services Apache HTTP Server\n2.4.37 Service Pack 10, and includes bug fixes and enhancements, which are\ndocumented in the Release Notes document linked to in the References. ==========================================================================\nUbuntu Security Notice USN-5090-1\nSeptember 27, 2021\n\napache2 vulnerabilities\n==========================================================================\n\nA security issue affects these releases of Ubuntu and its derivatives:\n\n- Ubuntu 21.04\n- Ubuntu 20.04 LTS\n- Ubuntu 18.04 LTS\n\nSummary:\n\nSeveral security issues were fixed in Apache HTTP Server. A remote attacker could\npossibly use this issue to perform request splitting or cache poisoning\nattacks. A remote attacker could possibly use this issue to\ncause the server to crash, resulting in a denial of service. \n(CVE-2021-34798)\n\nLi Zhi Xin discovered that the Apache mod_proxy_uwsgi module incorrectly\nhandled certain request uri-paths. A remote attacker could possibly use\nthis issue to cause the server to crash, resulting in a denial of service. \nThis issue only affected Ubuntu 20.04 LTS and Ubuntu 21.04. If the server was configured with third-party modules, a remote\nattacker could use this issue to cause the server to crash, resulting in a\ndenial of service, or possibly execute arbitrary code. (CVE-2021-39275)\n\nIt was discovered that the Apache mod_proxy module incorrectly handled\ncertain request uri-paths. A remote attacker could possibly use this issue\nto cause the server to forward requests to arbitrary origin servers. \n(CVE-2021-40438)\n\nUpdate instructions:\n\nThe problem can be corrected by updating your system to the following\npackage versions:\n\nUbuntu 21.04:\n apache2 2.4.46-4ubuntu1.2\n apache2-bin 2.4.46-4ubuntu1.2\n\nUbuntu 20.04 LTS:\n apache2 2.4.41-4ubuntu3.5\n apache2-bin 2.4.41-4ubuntu3.5\n\nUbuntu 18.04 LTS:\n apache2 2.4.29-1ubuntu4.17\n apache2-bin 2.4.29-1ubuntu4.17\n\nIn general, a standard system update will make all the necessary changes",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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