Vulnerability-Lookup

OESA-2026-1180 (CVE-2025-13151)

Vulnerability from osv_openeuler – Published: 2026-01-16 11:10 – Updated: 2026-08-06 11:10 – Source website

Summary

libtasn1 security update

Details

Libtasn1 is the ASN.1 library used by GnuTLS, p11-kit and some other packages. The goal of this implementation is to be highly portable, and only require an ANSI C99 platform.This library provides Abstract Syntax Notation One (ASN.1, as specified by the X.680 ITU-T recommendation) parsing and structures management, and Distinguished Encoding Rules (DER, as per X.690) encoding and decoding functions.

Security Fix(es):

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.(CVE-2025-13151)

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

URL

Type

	https://www.openeuler.org/zh/security/security-bu…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2025-13151	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "libtasn1-4.19.0-3.oe2403sp2.aarch64.rpm",
          "libtasn1-debuginfo-4.19.0-3.oe2403sp2.aarch64.rpm",
          "libtasn1-debugsource-4.19.0-3.oe2403sp2.aarch64.rpm",
          "libtasn1-devel-4.19.0-3.oe2403sp2.aarch64.rpm"
        ],
        "noarch": [
          "libtasn1-help-4.19.0-3.oe2403sp2.noarch.rpm"
        ],
        "src": [
          "libtasn1-4.19.0-3.oe2403sp2.src.rpm"
        ],
        "x86_64": [
          "libtasn1-4.19.0-3.oe2403sp2.x86_64.rpm",
          "libtasn1-debuginfo-4.19.0-3.oe2403sp2.x86_64.rpm",
          "libtasn1-debugsource-4.19.0-3.oe2403sp2.x86_64.rpm",
          "libtasn1-devel-4.19.0-3.oe2403sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP2",
        "name": "libtasn1",
        "purl": "pkg:rpm/openEuler/libtasn1\u0026distro=openEuler-24.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.19.0-3.oe2403sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Libtasn1 is the ASN.1 library used by GnuTLS, p11-kit and some other packages. The goal of this implementation is to be highly portable, and only require an ANSI C99 platform.This library provides Abstract Syntax Notation One (ASN.1, as specified by the X.680 ITU-T recommendation) parsing and structures management, and Distinguished Encoding Rules (DER, as per X.690) encoding and decoding functions.\r\n\r\nSecurity Fix(es):\n\nStack-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.(CVE-2025-13151)",
  "id": "OESA-2026-1180",
  "modified": "2026-08-06T11:10:13Z",
  "published": "2026-01-16T11:10:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1180"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13151"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "libtasn1 security update",
  "upstream": [
    "CVE-2025-13151"
  ]
}

CVE-2025-13151 (GCVE-0-2025-13151)

Vulnerability from cvelistv5 – Published: 2026-01-07 21:14 – Updated: 2026-01-20 17:08

Title

CVE-2025-13151

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.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-01-07 21:32 UTC

CWE

Assigner

certcc mitre root Scorecard

References

4 references

URL	Tags
https://gitlab.com/gnutls/libtasn1
https://gitlab.com/gnutls/libtasn1/-/merge_requests/121	patch
http://www.openwall.com/lists/oss-security/2026/01/08/5
https://www.kb.cert.org/vuls/id/271649

Impacted products

1 product

Vendor	Product	Version
GnuTLS	libtasn1	Affected: 0 , ≤ 4.20.0 (semver)

Credits

This issue was reported Benny Zelster from Microsoft Security Research

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-13151",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-07T21:32:59.782767Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-07T21:33:12.865Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-01-20T17:08:41.712Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/01/08/5"
          },
          {
            "url": "https://www.kb.cert.org/vuls/id/271649"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "libtasn1",
          "vendor": "GnuTLS",
          "versions": [
            {
              "lessThanOrEqual": "4.20.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "This issue was reported Benny Zelster from Microsoft Security Research"
        }
      ],
      "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-120 Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
              "lang": "en"
            }
          ]
        },
        {
          "descriptions": [
            {
              "description": "CWE-121 Stack-based Buffer Overflow",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-07T21:15:56.927Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "name": "Source Code Respoitory",
          "url": "https://gitlab.com/gnutls/libtasn1"
        },
        {
          "name": "Proposed Pull Request",
          "tags": [
            "patch"
          ],
          "url": "https://gitlab.com/gnutls/libtasn1/-/merge_requests/121"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "CVE-2025-13151",
      "x_generator": {
        "engine": "VINCE 3.0.31",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2025-13151"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2025-13151",
    "datePublished": "2026-01-07T21:14:05.223Z",
    "dateReserved": "2025-11-13T21:14:53.973Z",
    "dateUpdated": "2026-01-20T17:08:41.712Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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OESA-2026-1180 (CVE-2025-13151)

CVE-2025-13151 (GCVE-0-2025-13151)

Tags

Sightings

Nomenclature

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