FKIE_CVE-2025-32989

Vulnerability from fkie_nvd - Published: 2025-07-10 08:15 - Updated: 2026-06-17 09:12
Severity
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Summary
A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:16115
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:16116
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:17181
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:17348
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:17361
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:19088
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2025:22529
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2026:7477
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2025-32989Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2359621Issue Tracking
secalert@redhat.comhttps://lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.html
af854a3a-2127-422b-91ae-364da2661108http://www.openwall.com/lists/oss-security/2025/07/11/3
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-082556.html
Impacted products
Vendor Product Version
gnu gnutls -
redhat openshift_container_platform 4.0
redhat enterprise_linux 6.0
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux 9.0
redhat enterprise_linux 10.0
To clipboard 

{
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  "configurations": [
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 una vulnerabilidad de sobrelectura del b\u00fafer de mont\u00f3n en GnuTLS en la gesti\u00f3n de la extensi\u00f3n de marca de tiempo del certificado firmado (SCT) de Transparencia de Certificado (CT) durante el an\u00e1lisis de certificados X.509. Esta falla permite a un usuario malintencionado crear un certificado con una extensi\u00f3n SCT mal formada (OID 1.3.6.1.4.1.11129.2.4.2) que contiene datos confidenciales. Este problema provoca la exposici\u00f3n de informaci\u00f3n confidencial cuando GnuTLS verifica certificados de ciertos sitios web cuando la SCT no se verifica correctamente."
    }
  ],
  "id": "CVE-2025-32989",
  "lastModified": "2026-06-17T09:12:55.770",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
          "version": "3.1"
        },
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        "impactScore": 1.4,
        "source": "secalert@redhat.com",
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        "ssvcData": {
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          "options": [
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            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-07-10T20:04:51.314429Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-07-10T08:15:24.430",
  "references": [
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      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2025:16115"
    },
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      "source": "secalert@redhat.com",
      "url": "https://access.redhat.com/errata/RHSA-2025:16116"
    },
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    },
    {
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      "tags": [
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      ],
      "url": "https://access.redhat.com/security/cve/CVE-2025-32989"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2359621"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "http://www.openwall.com/lists/oss-security/2025/07/11/3"
    },
    {
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      "url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"
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  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.