rhsa-2003_259
Vulnerability from csaf_redhat
Published
2003-08-21 16:10
Modified
2024-11-21 22:49
Summary
Red Hat Security Advisory: gdm security update

Notes

Topic
Updated GDM packages are available which correct a local crash if XDMCP is enabled.
Details
GDM is the GNOME Display Manager for X. Two bugs have been found in the X Display Manager Control Protocol (XDMCP) which could allow a denial of service attack (DoS) by crashing the gdm daemon. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CAN-2003-0548 and CAN-2003-0549 to these issues. This attack is only possible if XDMCP is enabled. XDMCP is not enabled by default in Red Hat Enterprise Linux distributions. In addition is documented best practise that XDMCP should only ever be run on trusted networks. Users of XDMCP in GDM should upgrade to these erratum packages which contain backported security fixes are are not vulnerable to these issues. Note that Red Hat Enterprise Linux 2.1 is not vulnerable to CAN-2003-0547, a vulnerability that allows a local user to read any text file, as it did not have the "examine session errors" feature.
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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{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Low"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Updated GDM packages are available which correct a local crash if XDMCP is\nenabled.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "GDM is the GNOME Display Manager for X.\n\nTwo bugs have been found in the X Display Manager Control Protocol (XDMCP)\nwhich could allow a denial of service attack (DoS) by crashing the gdm\ndaemon. The Common Vulnerabilities and Exposures project (cve.mitre.org)\nhas assigned the names CAN-2003-0548 and CAN-2003-0549 to these issues.\n\nThis attack is only possible if XDMCP is enabled. XDMCP is not enabled by\ndefault in Red Hat Enterprise Linux distributions.  In addition is\ndocumented best practise that XDMCP should only ever be run on trusted\nnetworks.\n\nUsers of XDMCP in GDM should upgrade to these erratum packages which\ncontain backported security fixes are are not vulnerable to these issues.\n\nNote that Red Hat Enterprise Linux 2.1 is not vulnerable to CAN-2003-0547,\na vulnerability that allows a local user to read any text file, as it did\nnot have the \"examine session errors\" feature.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "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.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2003:259",
        "url": "https://access.redhat.com/errata/RHSA-2003:259"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#low",
        "url": "https://access.redhat.com/security/updates/classification/#low"
      },
      {
        "category": "external",
        "summary": "102452",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=102452"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2003/rhsa-2003_259.json"
      }
    ],
    "title": "Red Hat Security Advisory: gdm security update",
    "tracking": {
      "current_release_date": "2024-11-21T22:49:48+00:00",
      "generator": {
        "date": "2024-11-21T22:49:48+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.2.1"
        }
      },
      "id": "RHSA-2003:259",
      "initial_release_date": "2003-08-21T16:10:00+00:00",
      "revision_history": [
        {
          "date": "2003-08-21T16:10:00+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2003-08-21T00:00:00+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-21T22:49:48+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux AS (Advanced Server) version 2.1 ",
                "product": {
                  "name": "Red Hat Enterprise Linux AS (Advanced Server) version 2.1 ",
                  "product_id": "Red Hat Enterprise Linux AS (Advanced Server) version 2.1 ",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:2.1::as"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Linux Advanced Workstation 2.1",
                "product": {
                  "name": "Red Hat Linux Advanced Workstation 2.1",
                  "product_id": "Red Hat Linux Advanced Workstation 2.1",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:2.1::aw"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux ES version 2.1",
                "product": {
                  "name": "Red Hat Enterprise Linux ES version 2.1",
                  "product_id": "Red Hat Enterprise Linux ES version 2.1",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:2.1::es"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux WS version 2.1",
                "product": {
                  "name": "Red Hat Enterprise Linux WS version 2.1",
                  "product_id": "Red Hat Enterprise Linux WS version 2.1",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:2.1::ws"
                  }
                }
              }
            ],
            "category": "product_family",
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          }
        ],
        "category": "vendor",
        "name": "Red Hat"
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2003-0548",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1617051"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The X Display Manager Control Protocol (XDMCP) support for GDM before 2.4.1.6 allows attackers to cause a denial of service (daemon crash) when a chosen host expires, a different issue than CVE-2003-0549.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "security flaw",
          "title": "Vulnerability summary"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Enterprise Linux AS (Advanced Server) version 2.1 ",
          "Red Hat Enterprise Linux ES version 2.1",
          "Red Hat Enterprise Linux WS version 2.1",
          "Red Hat Linux Advanced Workstation 2.1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2003-0548"
        },
        {
          "category": "external",
          "summary": "RHBZ#1617051",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1617051"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2003-0548",
          "url": "https://www.cve.org/CVERecord?id=CVE-2003-0548"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2003-0548",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2003-0548"
        }
      ],
      "release_date": "2003-08-20T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2003-08-21T16:10:00+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nTo update all RPMs for your particular architecture, run:\n\nrpm -Fvh [filenames]\n\nwhere [filenames] is a list of the RPMs you wish to upgrade.  Only those\nRPMs which are currently installed will be updated.  Those RPMs which are\nnot installed but included in the list will not be updated.  Note that you\ncan also use wildcards (*.rpm) if your current directory *only* contains the\ndesired RPMs.\n\nPlease note that this update is also available via Red Hat Network.  Many\npeople find this an easier way to apply updates.  To use Red Hat Network,\nlaunch the Red Hat Update Agent with the following command:\n\nup2date\n\nThis will start an interactive process that will result in the appropriate\nRPMs being upgraded on your system.",
          "product_ids": [
            "Red Hat Enterprise Linux AS (Advanced Server) version 2.1 ",
            "Red Hat Enterprise Linux ES version 2.1",
            "Red Hat Enterprise Linux WS version 2.1",
            "Red Hat Linux Advanced Workstation 2.1"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2003:259"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "security flaw"
    },
    {
      "cve": "CVE-2003-0549",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1617052"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The X Display Manager Control Protocol (XDMCP) support for GDM before 2.4.1.6 allows attackers to cause a denial of service (daemon crash) via a short authorization key name.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "security flaw",
          "title": "Vulnerability summary"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Enterprise Linux AS (Advanced Server) version 2.1 ",
          "Red Hat Enterprise Linux ES version 2.1",
          "Red Hat Enterprise Linux WS version 2.1",
          "Red Hat Linux Advanced Workstation 2.1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2003-0549"
        },
        {
          "category": "external",
          "summary": "RHBZ#1617052",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1617052"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2003-0549",
          "url": "https://www.cve.org/CVERecord?id=CVE-2003-0549"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2003-0549",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2003-0549"
        }
      ],
      "release_date": "2003-08-20T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2003-08-21T16:10:00+00:00",
          "details": "Before applying this update, make sure all previously released errata\nrelevant to your system have been applied.\n\nTo update all RPMs for your particular architecture, run:\n\nrpm -Fvh [filenames]\n\nwhere [filenames] is a list of the RPMs you wish to upgrade.  Only those\nRPMs which are currently installed will be updated.  Those RPMs which are\nnot installed but included in the list will not be updated.  Note that you\ncan also use wildcards (*.rpm) if your current directory *only* contains the\ndesired RPMs.\n\nPlease note that this update is also available via Red Hat Network.  Many\npeople find this an easier way to apply updates.  To use Red Hat Network,\nlaunch the Red Hat Update Agent with the following command:\n\nup2date\n\nThis will start an interactive process that will result in the appropriate\nRPMs being upgraded on your system.",
          "product_ids": [
            "Red Hat Enterprise Linux AS (Advanced Server) version 2.1 ",
            "Red Hat Enterprise Linux ES version 2.1",
            "Red Hat Enterprise Linux WS version 2.1",
            "Red Hat Linux Advanced Workstation 2.1"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2003:259"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "security flaw"
    }
  ]
}


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