rhsa-2001_132
Vulnerability from csaf_redhat
Published
2001-10-16 19:15
Modified
2024-11-21 22:08
Summary
Red Hat Security Advisory: : New util-linux packages available to fix /bin/login pam problem

Notes

Topic
New util-linux packages are available that fix a problem with /bin/login's PAM implementation. This could, in some non-default setups, cause users to receive credentials of other users. It is recommended that all users update to the fixed packages. 2001-10-22: Packages are now available for Red Hat Linux 7.2. Notably, these packages also fix the problem noted in RHSA-2001:095-04 (vipw incorrectly setting permissions on some files) - this bug was accidentally reintroduced in Red Hat Linux 7.2.
Details
A problem existed in /bin/login's PAM implementation; it stored the value of a static pwent buffer across PAM calls; when used with some PAM modules in non-default configuration (such as pam_limits), it would overwrite the buffer, causing a user to get credentials of another user. Thanks go to Tarhon-Onu Victor <mituc@ac.tuiasi.ro> for bringing the problem to our attention, and to Olaf Kirch <okir@caldera.de> for providing the patch.
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": "New util-linux packages are available that fix a problem with /bin/login\u0027s\nPAM implementation. This could, in some non-default setups, cause users to\nreceive credentials of other users. It is recommended that all users\nupdate to the fixed packages.\n\n2001-10-22: Packages are now available for Red Hat Linux 7.2. Notably,\nthese packages also fix the problem noted in RHSA-2001:095-04 (vipw\nincorrectly setting permissions on some files) - this bug was accidentally\nreintroduced in Red Hat Linux 7.2.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "A problem existed in /bin/login\u0027s PAM implementation; it stored the value\nof a static pwent buffer across PAM calls; when used with some PAM modules\nin non-default configuration (such as pam_limits), it would overwrite the\nbuffer, causing a user to get credentials of another user.\n\nThanks go to Tarhon-Onu Victor \u003cmituc@ac.tuiasi.ro\u003e for bringing the\nproblem to our attention, and to Olaf Kirch \u003cokir@caldera.de\u003e for providing\nthe patch.",
        "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-2001:132",
        "url": "https://access.redhat.com/errata/RHSA-2001:132"
      },
      {
        "category": "external",
        "summary": "51646",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=51646"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2001/rhsa-2001_132.json"
      }
    ],
    "title": "Red Hat Security Advisory: : New util-linux packages available to fix /bin/login pam problem",
    "tracking": {
      "current_release_date": "2024-11-21T22:08:43+00:00",
      "generator": {
        "date": "2024-11-21T22:08:43+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.2.1"
        }
      },
      "id": "RHSA-2001:132",
      "initial_release_date": "2001-10-16T19:15:00+00:00",
      "revision_history": [
        {
          "date": "2001-10-16T19:15:00+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2001-10-11T00:00:00+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-21T22:08:43+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Linux 7.1",
                "product": {
                  "name": "Red Hat Linux 7.1",
                  "product_id": "Red Hat Linux 7.1",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:linux:7.1"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "Red Hat Linux 7.2",
                "product": {
                  "name": "Red Hat Linux 7.2",
                  "product_id": "Red Hat Linux 7.2",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:redhat:linux:7.2"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Red Hat Linux"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2001-1147",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1616647"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The PAM implementation in /bin/login of the util-linux package before 2.11 causes a password entry to be rewritten across multiple PAM calls, which could provide the credentials of one user to a different user, when used in certain PAM modules such as pam_limits.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "security flaw",
          "title": "Vulnerability summary"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Linux 7.1",
          "Red Hat Linux 7.2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2001-1147"
        },
        {
          "category": "external",
          "summary": "RHBZ#1616647",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1616647"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2001-1147",
          "url": "https://www.cve.org/CVERecord?id=CVE-2001-1147"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2001-1147",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2001-1147"
        }
      ],
      "release_date": "2001-10-08T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2001-10-16T19:15:00+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\nthe\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 Linux 7.1",
            "Red Hat Linux 7.2"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2001:132"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "security flaw"
    },
    {
      "cve": "CVE-2001-1175",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1616650"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "vipw in the util-linux package before 2.10 causes /etc/shadow to be world-readable in some cases, which would make it easier for local users to perform brute force password guessing.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "security flaw",
          "title": "Vulnerability summary"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat Linux 7.1",
          "Red Hat Linux 7.2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2001-1175"
        },
        {
          "category": "external",
          "summary": "RHBZ#1616650",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1616650"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2001-1175",
          "url": "https://www.cve.org/CVERecord?id=CVE-2001-1175"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2001-1175",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2001-1175"
        }
      ],
      "release_date": "2001-07-12T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2001-10-16T19:15:00+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\nthe\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 Linux 7.1",
            "Red Hat Linux 7.2"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2001:132"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "security flaw"
    }
  ]
}


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