UBUNTU-CVE-2020-10543 (CVE-2020-10543)

Vulnerability from osv_ubuntu – Published: 2020-06-01 00:00 – Updated: 2026-04-22 07:39 – Source website
VLAI
Details

Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow. An application written in Perl would only be vulnerable to this flaw if it evaluates regular expressions supplied by the attacker. Evaluating regular expressions in this fashion is known to be dangerous since the regular expression engine does not protect against denial of service attacks in this usage scenario. Additionally, the target system needs a sufficient amount of memory to allocate partial expansions of the nested quantifiers prior to the overflow occurring. This requirement is unlikely to be met on 64bit systems.]

Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libcgi-fast-perl",
            "binary_version": "5.18.2-2ubuntu1.7+esm3"
          },
          {
            "binary_name": "libperl5.18",
            "binary_version": "5.18.2-2ubuntu1.7+esm3"
          },
          {
            "binary_name": "perl",
            "binary_version": "5.18.2-2ubuntu1.7+esm3"
          },
          {
            "binary_name": "perl-base",
            "binary_version": "5.18.2-2ubuntu1.7+esm3"
          },
          {
            "binary_name": "perl-debug",
            "binary_version": "5.18.2-2ubuntu1.7+esm3"
          },
          {
            "binary_name": "perl-modules",
            "binary_version": "5.18.2-2ubuntu1.7+esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "perl",
        "purl": "pkg:deb/ubuntu/perl@5.18.2-2ubuntu1.7+esm3?arch=source\u0026distro=trusty/esm"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.18.2-2ubuntu1.7+esm3"
            }
          ],
          "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",
        "5.18.2-2ubuntu1.3",
        "5.18.2-2ubuntu1.4",
        "5.18.2-2ubuntu1.6",
        "5.18.2-2ubuntu1.7"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libperl5.22",
            "binary_version": "5.22.1-9ubuntu0.9"
          },
          {
            "binary_name": "perl",
            "binary_version": "5.22.1-9ubuntu0.9"
          },
          {
            "binary_name": "perl-base",
            "binary_version": "5.22.1-9ubuntu0.9"
          },
          {
            "binary_name": "perl-debug",
            "binary_version": "5.22.1-9ubuntu0.9"
          },
          {
            "binary_name": "perl-modules-5.22",
            "binary_version": "5.22.1-9ubuntu0.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "perl",
        "purl": "pkg:deb/ubuntu/perl@5.22.1-9ubuntu0.9?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.22.1-9ubuntu0.9"
            }
          ],
          "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",
        "5.22.1-9ubuntu0.2",
        "5.22.1-9ubuntu0.3",
        "5.22.1-9ubuntu0.5",
        "5.22.1-9ubuntu0.6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libperl5.26",
            "binary_version": "5.26.1-6ubuntu0.5"
          },
          {
            "binary_name": "perl",
            "binary_version": "5.26.1-6ubuntu0.5"
          },
          {
            "binary_name": "perl-base",
            "binary_version": "5.26.1-6ubuntu0.5"
          },
          {
            "binary_name": "perl-debug",
            "binary_version": "5.26.1-6ubuntu0.5"
          },
          {
            "binary_name": "perl-modules-5.26",
            "binary_version": "5.26.1-6ubuntu0.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "perl",
        "purl": "pkg:deb/ubuntu/perl@5.26.1-6ubuntu0.5?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.26.1-6ubuntu0.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.26.0-8ubuntu1",
        "5.26.1-2ubuntu1",
        "5.26.1-3",
        "5.26.1-4",
        "5.26.1-4build1",
        "5.26.1-5",
        "5.26.1-6",
        "5.26.1-6ubuntu0.1",
        "5.26.1-6ubuntu0.2",
        "5.26.1-6ubuntu0.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libperl5.30",
            "binary_version": "5.30.0-9ubuntu0.2"
          },
          {
            "binary_name": "perl",
            "binary_version": "5.30.0-9ubuntu0.2"
          },
          {
            "binary_name": "perl-base",
            "binary_version": "5.30.0-9ubuntu0.2"
          },
          {
            "binary_name": "perl-debug",
            "binary_version": "5.30.0-9ubuntu0.2"
          },
          {
            "binary_name": "perl-modules-5.30",
            "binary_version": "5.30.0-9ubuntu0.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "perl",
        "purl": "pkg:deb/ubuntu/perl@5.30.0-9ubuntu0.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5.30.0-9ubuntu0.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.28.1-6build1",
        "5.30.0-7",
        "5.30.0-9",
        "5.30.0-9build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Perl before 5.30.3 on 32-bit platforms allows a heap-based buffer overflow because nested regular expression quantifiers have an integer overflow.  An application written in Perl would only be vulnerable to this flaw if  it evaluates regular expressions supplied by the attacker. Evaluating  regular expressions in this fashion is known to be dangerous since the  regular expression engine does not protect against denial of service  attacks in this usage scenario.  Additionally, the target system needs a sufficient amount of memory to  allocate partial expansions of the nested quantifiers prior to the  overflow occurring. This requirement is unlikely to be met on 64bit  systems.]",
  "id": "UBUNTU-CVE-2020-10543",
  "modified": "2026-04-22T07:39:20Z",
  "published": "2020-06-01T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-10543"
    },
    {
      "type": "REPORT",
      "url": "https://metacpan.org/pod/release/XSAWYERX/perl-5.28.3/pod/perldelta.pod"
    },
    {
      "type": "REPORT",
      "url": "https://metacpan.org/pod/release/XSAWYERX/perl-5.30.3/pod/perldelta.pod"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4602-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-4602-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2020-10543"
    }
  ],
  "related": [
    "USN-4602-1",
    "USN-4602-2"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2020-10543"
  ]
}



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