{
  "document": {
    "aggregate_severity": {
      "text": "Medium"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "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 Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_alt_common/el7/vex/2017/cve-2017-16231-els_alt_common-el7.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-10-19T08:23:50Z",
      "generator": {
        "date": "2026-10-19T08:23:50Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CVE-2017-16231-ELS_ALT_COMMON-EL7",
      "initial_release_date": "2017-01-01T00:00:00Z",
      "revision_history": [
        {
          "date": "2017-01-01T00:00:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-10-15T21:18:09Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2026-10-19T08:23:50Z",
          "number": "3",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "3"
    },
    "title": "Security update on CVE-2017-16231"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Community Enterprise Operating System 7",
                "product": {
                  "name": "Community Enterprise Operating System 7",
                  "product_id": "CentOS-7",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:centos:centos:7:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Community Enterprise Operating System"
          }
        ],
        "category": "vendor",
        "name": "Cloud Linux Software, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "alt-pcre-0:8.45-2.el7.x86_64",
                "product": {
                  "name": "alt-pcre-0:8.45-2.el7.x86_64",
                  "product_id": "alt-pcre-0:8.45-2.el7.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/alt-pcre@8.45-2.el7?arch=x86_64&os_name=centos&os_version=7"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "alt-pcre-devel-0:8.45-2.el7.x86_64",
                "product": {
                  "name": "alt-pcre-devel-0:8.45-2.el7.x86_64",
                  "product_id": "alt-pcre-devel-0:8.45-2.el7.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/alt-pcre-devel@8.45-2.el7?arch=x86_64&os_name=centos&os_version=7"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-pcre-0:8.45-2.el7.x86_64 as a component of Community Enterprise Operating System 7",
          "product_id": "CentOS-7:alt-pcre-0:8.45-2.el7.x86_64"
        },
        "product_reference": "alt-pcre-0:8.45-2.el7.x86_64",
        "relates_to_product_reference": "CentOS-7"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "alt-pcre-devel-0:8.45-2.el7.x86_64 as a component of Community Enterprise Operating System 7",
          "product_id": "CentOS-7:alt-pcre-devel-0:8.45-2.el7.x86_64"
        },
        "product_reference": "alt-pcre-devel-0:8.45-2.el7.x86_64",
        "relates_to_product_reference": "CentOS-7"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2017-16231",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "notes": [
        {
          "category": "description",
          "text": "In PCRE 8.41, after compiling, a pcretest load test PoC produces a crash overflow in the function match() in pcre_exec.c because of a self-recursive call. NOTE: third parties dispute the relevance of this report, noting that there are options that can be used to limit the amount of stack that is used",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
        "known_not_affected": [
          "CentOS-7:alt-pcre-0:8.45-2.el7.x86_64",
          "CentOS-7:alt-pcre-devel-0:8.45-2.el7.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els-alt-common/cve/CVE-2017-16231"
        },
        {
          "category": "external",
          "summary": "http://packetstormsecurity.com/files/150897/PCRE-8.41-Buffer-Overflow.html",
          "url": "http://packetstormsecurity.com/files/150897/PCRE-8.41-Buffer-Overflow.html"
        },
        {
          "category": "external",
          "summary": "http://seclists.org/fulldisclosure/2018/Dec/33",
          "url": "http://seclists.org/fulldisclosure/2018/Dec/33"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2017/11/01/11",
          "url": "http://www.openwall.com/lists/oss-security/2017/11/01/11"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2017/11/01/3",
          "url": "http://www.openwall.com/lists/oss-security/2017/11/01/3"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2017/11/01/7",
          "url": "http://www.openwall.com/lists/oss-security/2017/11/01/7"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2017/11/01/8",
          "url": "http://www.openwall.com/lists/oss-security/2017/11/01/8"
        },
        {
          "category": "external",
          "summary": "http://www.securityfocus.com/bid/101688",
          "url": "http://www.securityfocus.com/bid/101688"
        },
        {
          "category": "external",
          "summary": "https://bugs.exim.org/show_bug.cgi?id=2047",
          "url": "https://bugs.exim.org/show_bug.cgi?id=2047"
        }
      ],
      "release_date": "2019-03-17T16:24:52Z",
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        },
        {
          "category": "impact",
          "date": "2026-10-19T06:07:12.586285Z",
          "details": "moderate",
          "product_ids": [
            "CentOS-7:alt-pcre-0:8.45-2.el7.x86_64",
            "CentOS-7:alt-pcre-devel-0:8.45-2.el7.x86_64"
          ]
        }
      ]
    }
  ]
}