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FKIE_CVE-2025-13151

Vulnerability from fkie_nvd - Published: 2026-01-07 22:15 - Updated: 2026-06-17 08:33
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string.
References
cret@cert.orghttps://gitlab.com/gnutls/libtasn1Product
cret@cert.orghttps://gitlab.com/gnutls/libtasn1/-/merge_requests/121Patch
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2026/01/08/5Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/271649Third Party Advisory
Impacted products
Vendor Product Version
gnu libtasn1 4.20.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "libtasn1",
          "vendor": "GnuTLS",
          "versions": [
            {
              "lessThanOrEqual": "4.20.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "cret@cert.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gnu:libtasn1:4.20.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "07E5B1B9-3891-490C-B148-DD952764A8A0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string."
    },
    {
      "lang": "es",
      "value": "Desbordamiento de b\u00fafer basado en pila en libtasn1 versi\u00f3n: v4.20.0. La funci\u00f3n no valida el tama\u00f1o de los datos de entrada, lo que resulta en un desbordamiento de b\u00fafer en asn1_expend_octet_string."
    }
  ],
  "id": "CVE-2025-13151",
  "lastModified": "2026-06-17T08:33:34.880",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-13151",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-01-07T21:32:59.782767Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-07T22:15:43.200",
  "references": [
    {
      "source": "cret@cert.org",
      "tags": [
        "Product"
      ],
      "url": "https://gitlab.com/gnutls/libtasn1"
    },
    {
      "source": "cret@cert.org",
      "tags": [
        "Patch"
      ],
      "url": "https://gitlab.com/gnutls/libtasn1/-/merge_requests/121"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Patch"
      ],
      "url": "http://www.openwall.com/lists/oss-security/2026/01/08/5"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.kb.cert.org/vuls/id/271649"
    }
  ],
  "sourceIdentifier": "cret@cert.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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