rhba-2004:164
Vulnerability from csaf_redhat
Published
2004-05-11 00:00
Modified
2025-11-21 17:20
Summary
Red Hat Bug Fix Advisory: Updated vsftpd package fixes signal handling bug

Notes

Topic
An updated vsftpd package that fixes a signal handling bug which could cause the service to stop accepting connections is now available.
Details
vsftpd is an FTP (File Transfer Protocol) daemon. vsftpd was calling unsafe functions from within signal handlers; under heavy load, this could lead to deadlock, leading the service to stop accepting connections. Users of vsftpd should upgrade to this updated package, which resolves 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.


To clipboard 

{
  "document": {
    "aggregate_severity": {
      "namespace": "https://access.redhat.com/security/updates/classification/",
      "text": "Moderate"
    },
    "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": "An updated vsftpd package that fixes a signal handling bug which could\ncause the service to stop accepting connections is now available.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "vsftpd is an FTP (File Transfer Protocol) daemon.\n\nvsftpd was calling unsafe functions from within signal handlers; under\nheavy load, this could lead to deadlock, leading the service to stop\naccepting connections.\n\nUsers of vsftpd should upgrade to this updated package, which resolves this\nissue.",
        "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/RHBA-2004:164",
        "url": "https://access.redhat.com/errata/RHBA-2004:164"
      },
      {
        "category": "external",
        "summary": "119136",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=119136"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2004/rhba-2004_164.json"
      }
    ],
    "title": "Red Hat Bug Fix Advisory: Updated vsftpd package fixes signal handling bug",
    "tracking": {
      "current_release_date": "2025-11-21T17:20:45+00:00",
      "generator": {
        "date": "2025-11-21T17:20:45+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.6.12"
        }
      },
      "id": "RHBA-2004:164",
      "initial_release_date": "2004-05-11T00:00:00+00:00",
      "revision_history": [
        {
          "date": "2004-05-11T00:00:00+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2004-05-11T00:00:00+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2025-11-21T17:20:45+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 version 3",
                "product": {
                  "name": "Red Hat Enterprise Linux AS version 3",
                  "product_id": "Red Hat Enterprise Linux AS version 3",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:3::as"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux ES version 3",
                "product": {
                  "name": "Red Hat Enterprise Linux ES version 3",
                  "product_id": "Red Hat Enterprise Linux ES version 3",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:enterprise_linux:3::es"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Enterprise Linux"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2004-2259",
      "discovery_date": "2004-03-25T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1617423"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "vsftpd before 1.2.2, when under heavy load, allows attackers to cause a denial of service (crash) via a SIGCHLD signal during a malloc or free call, which is not re-entrant.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "security flaw",
          "title": "Vulnerability summary"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Enterprise Linux AS version 3",
          "Red Hat Enterprise Linux ES version 3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2004-2259"
        },
        {
          "category": "external",
          "summary": "RHBZ#1617423",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1617423"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2004-2259",
          "url": "https://www.cve.org/CVERecord?id=CVE-2004-2259"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2004-2259",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2004-2259"
        }
      ],
      "release_date": "2004-03-25T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2004-05-11T00:00:00+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.\n\nIf up2date fails to connect to Red Hat Network due to SSL\nCertificate Errors, you need to install a version of the\nup2date client with an updated certificate.  The latest version of\nup2date is available from the Red Hat FTP site and may also be\ndownloaded directly from the RHN website:\n\nhttps://rhn.redhat.com/help/latest-up2date.pxt",
          "product_ids": [
            "Red Hat Enterprise Linux AS version 3",
            "Red Hat Enterprise Linux ES version 3"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHBA-2004:164"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "security flaw"
    }
  ]
}


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