FKIE_CVE-2017-12837

Vulnerability from fkie_nvd - Published: 2017-09-19 18:29 - Updated: 2026-06-17 01:04
Severity
7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
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.
References
cve@mitre.orghttp://www.debian.org/security/2017/dsa-3982
cve@mitre.orghttp://www.securityfocus.com/bid/100860Third Party Advisory, VDB Entry
cve@mitre.orghttps://bugzilla.redhat.com/show_bug.cgi?id=1492091Issue Tracking, Patch, Third Party Advisory, VDB Entry
cve@mitre.orghttps://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5Patch, Vendor Advisory
cve@mitre.orghttps://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1Release Notes, Vendor Advisory
cve@mitre.orghttps://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1Release Notes, Vendor Advisory
cve@mitre.orghttps://rt.perl.org/Public/Bug/Display.html?id=131582
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20180426-0001/
cve@mitre.orghttps://www.oracle.com/security-alerts/cpujul2020.html
af854a3a-2127-422b-91ae-364da2661108http://www.debian.org/security/2017/dsa-3982
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/100860Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1492091Issue Tracking, Patch, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://rt.perl.org/Public/Bug/Display.html?id=131582
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20180426-0001/
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpujul2020.html
Impacted products
Vendor Product Version
perl perl *
perl perl 5.26.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:perl:perl:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "DB276E2C-622C-45EB-8378-35751366049F",
              "versionEndIncluding": "5.24.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:perl:perl:5.26.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "B71CAECA-2A6A-4604-863F-3C1C055FB1CE",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Un desbordamiento de b\u00fafer en la regi\u00f3n heap de la memoria en la funci\u00f3n S_regatom en el archivo regcomp.c en Perl 5 anterior a versi\u00f3n 5.24.3-RC1 y versi\u00f3n 5.26.x anterior a 5.26.1-RC1, permite a los atacantes remotos causar una denegaci\u00f3n de servicio (escritura fuera de l\u00edmites) por medio de una expresi\u00f3n regular con un escape \u0027\\N{}\u0027 y el modificador que no distingue entre may\u00fasculas y min\u00fasculas."
    }
  ],
  "id": "CVE-2017-12837",
  "lastModified": "2026-06-17T01:04:00.390",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": true,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-09-19T18:29:00.167",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "http://www.debian.org/security/2017/dsa-3982"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/100860"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1492091"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://rt.perl.org/Public/Bug/Display.html?id=131582"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://security.netapp.com/advisory/ntap-20180426-0001/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://www.oracle.com/security-alerts/cpujul2020.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.debian.org/security/2017/dsa-3982"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/100860"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1492091"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://perl5.git.perl.org/perl.git/commitdiff/96c83ed78aeea1a0496dd2b2d935869a822dc8a5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://perl5.git.perl.org/perl.git/log/refs/tags/v5.24.3-RC1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://perl5.git.perl.org/perl.git/log/refs/tags/v5.26.1-RC1"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://rt.perl.org/Public/Bug/Display.html?id=131582"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.netapp.com/advisory/ntap-20180426-0001/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.oracle.com/security-alerts/cpujul2020.html"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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