ubuntu-cve-2017-12837
Vulnerability from osv_ubuntu
Published
2017-09-19 00:00
Modified
2026-04-22 07:38
Summary
Details

Heap-based buffer overflow in the S_regatom function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to cause a denial of service (out-of-bounds write) via a regular expression with a '\N{}' escape and the case-insensitive modifier.

Severity
7.5 (High)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libcgi-fast-perl",
            "binary_version": "5.18.2-2ubuntu1.3"
          },
          {
            "binary_name": "libperl5.18",
            "binary_version": "5.18.2-2ubuntu1.3"
          },
          {
            "binary_name": "perl",
            "binary_version": "5.18.2-2ubuntu1.3"
          },
          {
            "binary_name": "perl-base",
            "binary_version": "5.18.2-2ubuntu1.3"
          },
          {
            "binary_name": "perl-debug",
            "binary_version": "5.18.2-2ubuntu1.3"
          },
          {
            "binary_name": "perl-modules",
            "binary_version": "5.18.2-2ubuntu1.3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "perl",
        "purl": "pkg:deb/ubuntu/perl@5.18.2-2ubuntu1.3?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.18.2-2ubuntu1.3"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.14.2-21build1",
        "5.18.1-4",
        "5.18.1-4build1",
        "5.18.1-5",
        "5.18.2-2",
        "5.18.2-2ubuntu1",
        "5.18.2-2ubuntu1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libperl5.22",
            "binary_version": "5.22.1-9ubuntu0.2"
          },
          {
            "binary_name": "perl",
            "binary_version": "5.22.1-9ubuntu0.2"
          },
          {
            "binary_name": "perl-base",
            "binary_version": "5.22.1-9ubuntu0.2"
          },
          {
            "binary_name": "perl-debug",
            "binary_version": "5.22.1-9ubuntu0.2"
          },
          {
            "binary_name": "perl-modules-5.22",
            "binary_version": "5.22.1-9ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "perl",
        "purl": "pkg:deb/ubuntu/perl@5.22.1-9ubuntu0.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.22.1-9ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.20.2-6",
        "5.22.1-3",
        "5.22.1-4",
        "5.22.1-5",
        "5.22.1-7",
        "5.22.1-8",
        "5.22.1-9"
      ]
    }
  ],
  "aliases": [],
  "details": "Heap-based buffer overflow in the S_regatom function in regcomp.c in Perl 5 before 5.24.3-RC1 and 5.26.x before 5.26.1-RC1 allows remote attackers to cause a denial of service (out-of-bounds write) via a regular expression with a \u0027\\N{}\u0027 escape and the case-insensitive modifier.",
  "id": "UBUNTU-CVE-2017-12837",
  "modified": "2026-04-22T07:38:19Z",
  "published": "2017-09-19T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-12837"
    },
    {
      "type": "REPORT",
      "url": "https://rt.perl.org/Public/Bug/Display.html?id=131582"
    },
    {
      "type": "REPORT",
      "url": "https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3478-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2017-12837"
    }
  ],
  "related": [
    "USN-3478-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2017-12837"
  ]
}



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