rhsa-2002:195
Vulnerability from csaf_redhat
Published
2002-10-14 13:36
Modified
2024-11-21 22:28
Summary
Red Hat Security Advisory: tetex security update

Notes

Topic
Updated packages for dvips are available which fix a vulnerability allowing print users to execute arbitrary commands. [Updated 13 Aug 2003] Added tetex-doc package that was originally left out of the errata.
Details
The dvips utility converts DVI format into PostScript(TM), and is used in Red Hat Linux as a print filter for printing DVI files. A vulnerability has been found in dvips which uses the system() function insecurely when managing fonts. Since dvips is used in a print filter, this allows local or remote attackers who have print access to carefully craft a print job that allows them to execute arbitrary code as the user 'lp'. A work around for this vulnerability is to remove the print filter for DVI files. The following commands, run as root, will accomplish this: rm -f /usr/share/printconf/mf_rules/mf40-tetex_filters rm -f /usr/lib/rhs/rhs-printfilters/dvi-to-ps.fpi However, to fix the problem in the dvips utility as well as remove the print filter we recommend that all users upgrade to the these packages contained within this erratum which contain a patch for this issue. This vulnerability was discovered by Olaf Kirch of SuSE. Additionally, the file /var/lib/texmf/ls-R had world-writable permissions. This issue is also fixed by the packages contained within this erratum.
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 packages for dvips are available which fix a vulnerability allowing\nprint users to execute arbitrary commands.\n\n[Updated 13 Aug 2003]\nAdded tetex-doc package that was originally left out of the errata.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "The dvips utility converts DVI format into PostScript(TM), and is used in\nRed Hat Linux as a print filter for printing DVI files. A vulnerability\nhas been found in dvips which uses the system() function insecurely when\nmanaging fonts.\n\nSince dvips is used in a print filter, this allows local or remote\nattackers who have print access to carefully craft a print job that allows\nthem to execute arbitrary code as the user \u0027lp\u0027. \n\nA work around for this vulnerability is to remove the print filter for DVI\nfiles. The following commands, run as root, will accomplish this:\n\nrm -f /usr/share/printconf/mf_rules/mf40-tetex_filters\nrm -f /usr/lib/rhs/rhs-printfilters/dvi-to-ps.fpi\n\nHowever, to fix the problem in the dvips utility as well as remove the\nprint filter we recommend that all users upgrade to the these packages\ncontained within this erratum which contain a patch for this issue.\n\nThis vulnerability was discovered by Olaf Kirch of SuSE.\n\nAdditionally, the file /var/lib/texmf/ls-R had world-writable permissions.\n\nThis issue is also fixed by the packages contained within this erratum.",
        "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-2002:195",
        "url": "https://access.redhat.com/errata/RHSA-2002:195"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2002/rhsa-2002_195.json"
      }
    ],
    "title": "Red Hat Security Advisory: tetex security update",
    "tracking": {
      "current_release_date": "2024-11-21T22:28:02+00:00",
      "generator": {
        "date": "2024-11-21T22:28:02+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.2.1"
        }
      },
      "id": "RHSA-2002:195",
      "initial_release_date": "2002-10-14T13:36:00+00:00",
      "revision_history": [
        {
          "date": "2002-10-14T13:36:00+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2002-09-06T00:00:00+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-21T22:28:02+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_family",
            "name": "Red Hat Enterprise Linux"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2002-0836",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1616819"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "dvips converter for Postscript files in the tetex package calls the system() function insecurely, which allows remote attackers to execute arbitrary commands via certain print jobs, possibly involving fonts.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "security flaw",
          "title": "Vulnerability summary"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Enterprise Linux AS (Advanced Server) version 2.1 "
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2002-0836"
        },
        {
          "category": "external",
          "summary": "RHBZ#1616819",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1616819"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2002-0836",
          "url": "https://www.cve.org/CVERecord?id=CVE-2002-0836"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2002-0836",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2002-0836"
        }
      ],
      "release_date": "2002-10-14T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2002-10-14T13:36:00+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 "
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2002:195"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "security flaw"
    }
  ]
}


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