RHSA-2003:262
Vulnerability from csaf_redhat
Published
2003-08-26 12:15
Modified
2025-11-21 17:26
Summary
Red Hat Security Advisory: pam_smb security update

Notes

Topic
Updated pam_smb packages are now available which fix a security vulnerability (buffer overflow).
Details
The pam_smb module is a pluggable authentication module (PAM) used to authenticate users using an external Server Message Block (SMB) server. A buffer overflow vulnerability has been found that affects unpatched versions of pam_smb up to and including 1.1.6. On systems that use pam_smb and are configured to authenticate a remotely accessible service, an attacker can exploit this bug and remotely execute arbitrary code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2003-0686 to this issue. Red Hat Enterprise Linux contains a version of pam_smb that is vulnerable to this issue, however pam_smb is not enabled by default. Users of pam_smb are advised to upgrade to these erratum packages, which contain a patch to version 1.1.6 to correct this issue. Red Hat would like to thank Dave Airlie of the Samba team for notifying us of this issue.
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": "Important"
    },
    "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 pam_smb packages are now available which fix a security\nvulnerability (buffer overflow).",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "The pam_smb module is a pluggable authentication module (PAM) used to\nauthenticate users using an external Server Message Block (SMB) server.\n\nA buffer overflow vulnerability has been found that affects unpatched\nversions of pam_smb up to and including 1.1.6. \n\nOn systems that use pam_smb and are configured to authenticate a\nremotely accessible service, an attacker can exploit this bug and\nremotely execute arbitrary code. The Common Vulnerabilities and Exposures\nproject (cve.mitre.org) has assigned the name CAN-2003-0686 to this issue.\n\nRed Hat Enterprise Linux contains a version of pam_smb that is vulnerable\nto this issue, however pam_smb is not enabled by default.\n\nUsers of pam_smb are advised to upgrade to these erratum packages, which\ncontain a patch to version 1.1.6 to correct this issue.\n\nRed Hat would like to thank Dave Airlie of the Samba team for notifying us\nof this issue.",
        "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-2003:262",
        "url": "https://access.redhat.com/errata/RHSA-2003:262"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "102449",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=102449"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2003/rhsa-2003_262.json"
      }
    ],
    "title": "Red Hat Security Advisory: pam_smb security update",
    "tracking": {
      "current_release_date": "2025-11-21T17:26:27+00:00",
      "generator": {
        "date": "2025-11-21T17:26:27+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.6.12"
        }
      },
      "id": "RHSA-2003:262",
      "initial_release_date": "2003-08-26T12:15:00+00:00",
      "revision_history": [
        {
          "date": "2003-08-26T12:15:00+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2003-08-26T00:00:00+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2025-11-21T17:26:27+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"
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                }
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            ],
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        "category": "vendor",
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  "vulnerabilities": [
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      "cve": "CVE-2003-0686",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1617064"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Buffer overflow in PAM SMB module (pam_smb) 1.1.6 and earlier, when authenticating to a remote service, allows remote attackers to execute arbitrary code.",
          "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-2003-0686"
        },
        {
          "category": "external",
          "summary": "RHBZ#1617064",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1617064"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2003-0686",
          "url": "https://www.cve.org/CVERecord?id=CVE-2003-0686"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2003-0686",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2003-0686"
        }
      ],
      "release_date": "2003-08-26T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2003-08-26T12:15:00+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-2003:262"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "security flaw"
    }
  ]
}


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