RHSA-2008:0886

Vulnerability from csaf_redhat - Published: 2008-09-11 13:45 - Updated: 2025-11-21 17:33
Summary
Red Hat Security Advisory: libxml2 security update

Notes

Topic
Updated libxml2 packages that fix various security issues are now available for Red Hat Enterprise Linux 2.1. This update has been rated as having important security impact by the Red Hat Security Response Team.
Details
The libxml2 packages provide a library that allows you to manipulate XML files. It includes support to read, modify, and write XML and HTML files. A heap-based buffer overflow flaw was found in the way libxml2 handled long XML entity names. If an application linked against libxml2 processed untrusted malformed XML content, it could cause the application to crash or, possibly, execute arbitrary code. (CVE-2008-3529) A denial of service flaw was found in the way libxml2 processed certain content. If an application linked against libxml2 processed malformed XML content, it could cause the application to use an excessive amount of CPU time and memory, and stop responding. (CVE-2003-1564) All users of libxml2 are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.
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.
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      ],
      "notes": [
        {
          "category": "description",
          "text": "libxml2, possibly before 2.5.0, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, aka the \"billion laughs attack.\"",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libxml2: billion laughs DoS attack",
          "title": "Vulnerability summary"
        }
      ],
      "product_status": {
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2003-1564"
        },
        {
          "category": "external",
          "summary": "RHBZ#461107",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=461107"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2003-1564",
          "url": "https://www.cve.org/CVERecord?id=CVE-2003-1564"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2003-1564",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2003-1564"
        }
      ],
      "release_date": "2003-02-02T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2008-09-11T13:45:00+00:00",
          "details": "Before applying this update, make sure that all previously-released\nerrata relevant to your system have been applied.\n\nThis update is available via Red Hat Network.  Details on how to use\nthe Red Hat Network to apply this update are available at\nhttp://kbase.redhat.com/faq/FAQ_58_10188",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2008:0886"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libxml2: billion laughs DoS attack"
    },
    {
      "cve": "CVE-2008-3529",
      "cwe": {
        "id": "CWE-122",
        "name": "Heap-based Buffer Overflow"
      },
      "discovery_date": "2008-09-03T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "461015"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Heap-based buffer overflow in the xmlParseAttValueComplex function in parser.c in libxml2 before 2.7.0 allows context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via a long XML entity name.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "libxml2: long entity name heap buffer overflow",
          "title": "Vulnerability summary"
        }
      ],
      "product_status": {
        "fixed": [
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2008-3529"
        },
        {
          "category": "external",
          "summary": "RHBZ#461015",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=461015"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2008-3529",
          "url": "https://www.cve.org/CVERecord?id=CVE-2008-3529"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2008-3529",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2008-3529"
        }
      ],
      "release_date": "2008-09-11T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2008-09-11T13:45:00+00:00",
          "details": "Before applying this update, make sure that all previously-released\nerrata relevant to your system have been applied.\n\nThis update is available via Red Hat Network.  Details on how to use\nthe Red Hat Network to apply this update are available at\nhttp://kbase.redhat.com/faq/FAQ_58_10188",
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          "url": "https://access.redhat.com/errata/RHSA-2008:0886"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "libxml2: long entity name heap buffer overflow"
    }
  ]
}


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Tags
Taxonomy of the tags.




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.



Detection rules are retrieved from Rulezet.