Vulnerability-Lookup

RHSA-2011:0881

Vulnerability from csaf_redhat - Published: 2011-06-16 19:18 - Updated: 2025-11-21 17:38

Summary

Red Hat Security Advisory: Red Hat Network Proxy server jabberd security update

Severity

Low

Notes

Topic: An updated jabberd package that fixes one security issue is now available for Red Hat Network Proxy 5.4.1 for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having low security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Details: This package provides jabberd 2, an Extensible Messaging and Presence Protocol (XMPP) server used for XML based communication. It was found that the jabberd daemon did not properly detect recursion during entity expansion. A remote attacker could provide a specially-crafted XML file containing a large number of nested entity references, which once processed by the jabberd daemon, could lead to a denial of service (excessive memory and CPU consumption). (CVE-2011-1755) Red Hat would like to thank Nico Golde of the Debian Security Team for reporting this issue. The Debian Security Team acknowledges Wouter Coekaerts as the original reporter. Users of Red Hat Network Proxy 5.4.1 are advised to upgrade to this updated jabberd package, which resolves this issue. For this update to take effect, Red Hat Network Proxy must be restarted. Refer to the Solution section for details.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2011-1755

jabberd2 before 2.2.14 does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.

5.0 ()


                
                  AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

Fixed 7 products

Product	Version	Remediation
Unresolved product id: 5Server-RHNProxy54:jabberd-0:2.2.8-12.el5sat.i386	—	Vendor Fix fix
Unresolved product id: 5Server-RHNProxy54:jabberd-0:2.2.8-12.el5sat.s390x	—	Vendor Fix fix
Unresolved product id: 5Server-RHNProxy54:jabberd-0:2.2.8-12.el5sat.src	—	Vendor Fix fix
Unresolved product id: 5Server-RHNProxy54:jabberd-0:2.2.8-12.el5sat.x86_64	—	Vendor Fix fix
Unresolved product id: 5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.i386	—	Vendor Fix fix
Unresolved product id: 5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.s390x	—	Vendor Fix fix
Unresolved product id: 5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.x86_64	—	Vendor Fix fix

Threats

Impact Low

References

8 references

URL	Category
https://access.redhat.com/errata/RHSA-2011:0881	self
https://access.redhat.com/security/updates/classi…	external
https://bugzilla.redhat.com/show_bug.cgi?id=700390	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2011-1755	self
https://bugzilla.redhat.com/show_bug.cgi?id=700390	external
https://www.cve.org/CVERecord?id=CVE-2011-1755	external
https://nvd.nist.gov/vuln/detail/CVE-2011-1755	external

JSON

To clipboard

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  "vulnerabilities": [
    {
      "cve": "CVE-2011-1755",
      "discovery_date": "2011-04-27T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "700390"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "jabberd2 before 2.2.14 does not properly detect recursion during entity expansion, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, a similar issue to CVE-2003-1564.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "jabberd: DoS via the XML \"billion laughs attack\"",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Vulnerable. This issue has been addressed in Red Hat Network Satellite Server v 5.4.1 via RHSA-2011:0882 https://rhn.redhat.com/errata/RHSA-2011-0882.html and in Red Hat Network Proxy Server v5.4.1 via RHSA-2011:0881 https://rhn.redhat.com/errata/RHSA-2011-0881.html. This issue is not planned\nto be fixed in Red Hat Network Satellite Server versions 5.0.2, 5.1.1, 5.2.1, 5.3.0 and not planned to be fixed in Red Hat Network Proxy Server versions 5.0.2, 5.1.1, 5.2.1, and 5.3.0.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.i386",
          "5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.s390x",
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2011-1755"
        },
        {
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          "summary": "RHBZ#700390",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=700390"
        },
        {
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2011-1755",
          "url": "https://www.cve.org/CVERecord?id=CVE-2011-1755"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2011-1755",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2011-1755"
        }
      ],
      "release_date": "2011-05-31T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2011-06-16T19:18:00+00:00",
          "details": "Before applying this update, make sure all previously-released errata\nrelevant to your system have been applied.\n\nThis update is available via the Red Hat Network. Details on how to\nuse the Red Hat Network to apply this update are available at\nhttps://access.redhat.com/kb/docs/DOC-11259\n\nRun the following command to restart the Red Hat Network Proxy server:\n\n# rhn-proxy restart",
          "product_ids": [
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            "5Server-RHNProxy54:jabberd-0:2.2.8-12.el5sat.s390x",
            "5Server-RHNProxy54:jabberd-0:2.2.8-12.el5sat.src",
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            "5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.i386",
            "5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.s390x",
            "5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.x86_64"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2011:0881"
        }
      ],
      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "products": [
            "5Server-RHNProxy54:jabberd-0:2.2.8-12.el5sat.i386",
            "5Server-RHNProxy54:jabberd-0:2.2.8-12.el5sat.s390x",
            "5Server-RHNProxy54:jabberd-0:2.2.8-12.el5sat.src",
            "5Server-RHNProxy54:jabberd-0:2.2.8-12.el5sat.x86_64",
            "5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.i386",
            "5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.s390x",
            "5Server-RHNProxy54:jabberd-debuginfo-0:2.2.8-12.el5sat.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "jabberd: DoS via the XML \"billion laughs attack\""
    }
  ]
}

CVE-2011-1755 (GCVE-0-2011-1755)

Vulnerability from cvelistv5 – Published: 2011-06-21 01:00 – Updated: 2024-08-06 22:37

Summary

Severity

No CVSS data available.

CWE

Assigner

redhat CNA under the redhat root

CNA scorecard B 82/100 over 1130 records in the last 180 days details

References

16 references

URL	Tags
https://exchange.xforce.ibmcloud.com/vulnerabilit…	vdb-entryx_refsource_XF
http://codex.xiaoka.com/svn/jabberd2/tags/jabberd…	x_refsource_CONFIRM
http://secunia.com/advisories/44957	third-party-advisoryx_refsource_SECUNIA
http://secunia.com/advisories/44787	third-party-advisoryx_refsource_SECUNIA
http://lists.apple.com/archives/Security-announce…	vendor-advisoryx_refsource_APPLE
http://lists.fedoraproject.org/pipermail/package-…	vendor-advisoryx_refsource_FEDORA
http://www.redhat.com/support/errata/RHSA-2011-08…	vendor-advisoryx_refsource_REDHAT
https://hermes.opensuse.org/messages/9197650	vendor-advisoryx_refsource_SUSE
https://bugzilla.redhat.com/show_bug.cgi?id=700390	x_refsource_CONFIRM
http://lists.fedoraproject.org/pipermail/package-…	vendor-advisoryx_refsource_FEDORA
http://www.redhat.com/support/errata/RHSA-2011-08…	vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/48250	vdb-entryx_refsource_BID
http://lists.fedoraproject.org/pipermail/package-…	vendor-advisoryx_refsource_FEDORA
http://support.apple.com/kb/HT5002	x_refsource_CONFIRM
http://secunia.com/advisories/45112	third-party-advisoryx_refsource_SECUNIA
http://www.mail-archive.com/jabberd2%40lists.xiao…	mailing-listx_refsource_MLIST

Date Public

2011-06-01 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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