rhsa-2003_102
Vulnerability from csaf_redhat
Published
2003-03-31 12:00
Modified
2024-11-21 22:42
Summary
Red Hat Security Advisory: openssl security update

Notes

Topic
Updated OpenSSL packages are available that fix a potential timing-based attack and a modified Bleichenbacher attack. [Updated 30 May 2003] Added missing i686 packages.
Details
OpenSSL is a commercial-grade, full-featured, open source toolkit that implements the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols, and provides a full-strength general purpose cryptography library. Researchers discovered a timing attack on RSA keys. Applications making use of OpenSSL are generally vulnerable to such an attack, unless RSA blinding has been turned on. OpenSSL does not use RSA blinding by default and most applications do not enable RSA blinding. A local or remote attacker could use this attack to obtain the server's private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms (Karatsuba and normal). In order for an attack to be sucessful, an attacker must have good network conditions that allow small changes in timing to be reliably observed. Additionally, the SSL and TLS components for OpenSSL allow remote attackers to perform an unauthorized RSA private key operation via a modified Bleichenbacher attack. This attack (also known as the Klima-Pokorny-Rosa attack) uses a large number of SSL or TLS connections using PKCS #1 v1.5 padding to cause OpenSSL to leak information regarding the relationship between ciphertext and the associated plaintext. These erratum packages contain a patch provided by the OpenSSL group that enables RSA blinding by default, and protects against the Klima-Pokorny-Rosa attack. Because server applications are affected by these vulnerabilities, we advise users to restart all services that use OpenSSL functionality or, alternatively, reboot their systems after installing these updates.
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 OpenSSL packages are available that fix a potential timing-based\nattack and a modified Bleichenbacher attack.\n\n[Updated 30 May 2003]\nAdded missing i686 packages.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "OpenSSL is a commercial-grade, full-featured, open source toolkit that\nimplements the Secure Sockets Layer (SSL v2/v3) and Transport Layer\nSecurity (TLS v1) protocols, and provides a full-strength general purpose\ncryptography library.\n\nResearchers discovered a timing attack on RSA keys. Applications making\nuse of OpenSSL are generally vulnerable to such an attack, unless RSA\nblinding has been turned on. OpenSSL does not use RSA blinding by default\nand most applications do not enable RSA blinding.\n\nA local or remote attacker could use this attack to obtain the server\u0027s\nprivate key by determining factors using timing differences on (1) the\nnumber of extra reductions during Montgomery reduction, and (2) the use of\ndifferent integer multiplication algorithms (Karatsuba and normal).\n\nIn order for an attack to be sucessful, an attacker must have good\nnetwork conditions that allow small changes in timing to be reliably\nobserved.\n\nAdditionally, the SSL and TLS components for OpenSSL allow remote attackers\nto perform an unauthorized RSA private key operation via a modified\nBleichenbacher attack. This attack (also known as the Klima-Pokorny-Rosa\nattack) uses a large number of SSL or TLS connections using PKCS #1 v1.5\npadding to cause OpenSSL to leak information regarding the relationship\nbetween ciphertext and the associated plaintext.\n\nThese erratum packages contain a patch provided by the OpenSSL group that\nenables RSA blinding by default, and protects against the\nKlima-Pokorny-Rosa attack.\n\nBecause server applications are affected by these vulnerabilities, we\nadvise users to restart all services that use OpenSSL functionality or,\nalternatively, reboot their systems after installing these updates.",
        "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-2003:102",
        "url": "https://access.redhat.com/errata/RHSA-2003:102"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "http://crypto.stanford.edu/~dabo/papers/ssl-timing.pdf",
        "url": "http://crypto.stanford.edu/~dabo/papers/ssl-timing.pdf"
      },
      {
        "category": "external",
        "summary": "http://eprint.iacr.org/2003/052/",
        "url": "http://eprint.iacr.org/2003/052/"
      },
      {
        "category": "external",
        "summary": "86206",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=86206"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2003/rhsa-2003_102.json"
      }
    ],
    "title": "Red Hat Security Advisory: openssl security update",
    "tracking": {
      "current_release_date": "2024-11-21T22:42:57+00:00",
      "generator": {
        "date": "2024-11-21T22:42:57+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.2.1"
        }
      },
      "id": "RHSA-2003:102",
      "initial_release_date": "2003-03-31T12:00:00+00:00",
      "revision_history": [
        {
          "date": "2003-03-31T12:00:00+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2003-03-31T00:00:00+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-21T22:42:57+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",
            "name": "Red Hat Enterprise Linux"
          }
        ],
        "category": "vendor",
        "name": "Red Hat"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2003-0131",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1616975"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "The SSL and TLS components for OpenSSL 0.9.6i and earlier, 0.9.7, and 0.9.7a allow remote attackers to perform an unauthorized RSA private key operation via a modified Bleichenbacher attack that uses a large number of SSL or TLS connections using PKCS #1 v1.5 padding that cause OpenSSL to leak information regarding the relationship between ciphertext and the associated plaintext, aka the \"Klima-Pokorny-Rosa attack.\"",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "security flaw",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat Enterprise Linux 4 and 5 are not vulnerable to this issue as they both contain a backported patch.",
          "title": "Statement"
        }
      ],
      "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-2003-0131"
        },
        {
          "category": "external",
          "summary": "RHBZ#1616975",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1616975"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2003-0131",
          "url": "https://www.cve.org/CVERecord?id=CVE-2003-0131"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2003-0131",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2003-0131"
        }
      ],
      "release_date": "2003-03-19T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2003-03-31T12:00:00+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\nthe desired 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-2003:102"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "security flaw"
    },
    {
      "cve": "CVE-2003-0147",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1616986"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "OpenSSL does not use RSA blinding by default, which allows local and remote attackers to obtain the server\u0027s private key by determining factors using timing differences on (1) the number of extra reductions during Montgomery reduction, and (2) the use of different integer multiplication algorithms (\"Karatsuba\" and normal).",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "security flaw",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.",
          "title": "Statement"
        }
      ],
      "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-2003-0147"
        },
        {
          "category": "external",
          "summary": "RHBZ#1616986",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1616986"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2003-0147",
          "url": "https://www.cve.org/CVERecord?id=CVE-2003-0147"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2003-0147",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2003-0147"
        }
      ],
      "release_date": "2003-03-14T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2003-03-31T12:00:00+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\nthe desired 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-2003:102"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "security flaw"
    }
  ]
}


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