rhsa-2011:1105
Vulnerability from csaf_redhat
Published
2011-07-28 18:12
Modified
2024-11-22 04:30
Summary
Red Hat Security Advisory: libpng security update

Notes

Topic
Updated libpng packages that fix multiple security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
Details
The libpng packages contain a library of functions for creating and manipulating PNG (Portable Network Graphics) image format files. A buffer overflow flaw was found in the way libpng processed certain PNG image files. An attacker could create a specially-crafted PNG image that, when opened, could cause an application using libpng to crash or, potentially, execute arbitrary code with the privileges of the user running the application. (CVE-2011-2690) Note: The application behavior required to exploit CVE-2011-2690 is rarely used. No application shipped with Red Hat Enterprise Linux behaves this way, for example. An out-of-bounds memory read flaw was found in the way libpng processed certain PNG image files. An attacker could create a specially-crafted PNG image that, when opened, could cause an application using libpng to crash. (CVE-2011-2501) An uninitialized memory read issue was found in the way libpng processed certain PNG images that use the Physical Scale (sCAL) extension. An attacker could create a specially-crafted PNG image that, when opened, could cause an application using libpng to crash. (CVE-2011-2692) Users of libpng should upgrade to these updated packages, which upgrade libpng to version 1.2.46 to correct these issues. All running applications using libpng must be restarted for the update to take effect.
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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        "text": "Updated libpng packages that fix multiple security issues are now available\nfor Red Hat Enterprise Linux 6.\n\nThe Red Hat Security Response Team has rated this update as having moderate\nsecurity impact. Common Vulnerability Scoring System (CVSS) base scores,\nwhich give detailed severity ratings, are available for each vulnerability\nfrom the CVE links in the References section.",
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        "text": "The libpng packages contain a library of functions for creating and\nmanipulating PNG (Portable Network Graphics) image format files.\n\nA buffer overflow flaw was found in the way libpng processed certain PNG\nimage files. An attacker could create a specially-crafted PNG image that,\nwhen opened, could cause an application using libpng to crash or,\npotentially, execute arbitrary code with the privileges of the user running\nthe application. (CVE-2011-2690)\n\nNote: The application behavior required to exploit CVE-2011-2690 is rarely\nused. No application shipped with Red Hat Enterprise Linux behaves this\nway, for example.\n\nAn out-of-bounds memory read flaw was found in the way libpng processed\ncertain PNG image files. An attacker could create a specially-crafted PNG\nimage that, when opened, could cause an application using libpng to crash.\n(CVE-2011-2501)\n\nAn uninitialized memory read issue was found in the way libpng processed\ncertain PNG images that use the Physical Scale (sCAL) extension. An\nattacker could create a specially-crafted PNG image that, when opened,\ncould cause an application using libpng to crash. (CVE-2011-2692)\n\nUsers of libpng should upgrade to these updated packages, which upgrade\nlibpng to version 1.2.46 to correct these issues. All running applications\nusing libpng must be restarted for the update to take effect.",
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          "text": "The png_format_buffer function in pngerror.c in libpng 1.0.x before 1.0.55, 1.2.x before 1.2.45, 1.4.x before 1.4.8, and 1.5.x before 1.5.4 allows remote attackers to cause a denial of service (application crash) via a crafted PNG image that triggers an out-of-bounds read during the copying of error-message data.  NOTE: this vulnerability exists because of a CVE-2004-0421 regression. NOTE: this is called an off-by-one error by some sources.",
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        },
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          "title": "Vulnerability summary"
        },
        {
          "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"
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          "title": "Vulnerability description"
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          "text": "libpng: Invalid read when handling empty sCAL chunks",
          "title": "Vulnerability summary"
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "libpng: Invalid read when handling empty sCAL chunks"
    }
  ]
}


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