Vulnerability-Lookup

UBUNTU-CVE-2025-32988 (CVE-2025-32988)

Vulnerability from osv_ubuntu – Published: 2025-07-10 08:15 – Updated: 2026-04-22 07:54 – Source website

Details

A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not own, leading to a double-free condition when the parent function or caller later attempts to free the same structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of service or memory corruption, depending on allocator behavior.

Severity

6.5 (Medium)


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

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)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2025-32988	REPORT
	https://www.cve.org/CVERecord?id=CVE-2025-32988	REPORT
	https://lists.gnupg.org/pipermail/gnutls-help/202…	REPORT
	https://access.redhat.com/security/cve/CVE-2025-32988	REPORT
	https://ubuntu.com/security/notices/USN-7635-1	ADVISORY
	https://ubuntu.com/security/notices/USN-7742-1	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.5.18-1ubuntu1.6+esm2"
          },
          {
            "binary_name": "libgnutls-dane0",
            "binary_version": "3.5.18-1ubuntu1.6+esm2"
          },
          {
            "binary_name": "libgnutls-openssl27",
            "binary_version": "3.5.18-1ubuntu1.6+esm2"
          },
          {
            "binary_name": "libgnutls30",
            "binary_version": "3.5.18-1ubuntu1.6+esm2"
          },
          {
            "binary_name": "libgnutlsxx28",
            "binary_version": "3.5.18-1ubuntu1.6+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.5.18-1ubuntu1.6+esm2?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.18-1ubuntu1.6+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.5.8-6ubuntu3",
        "3.5.17-1ubuntu1",
        "3.5.17-1ubuntu3",
        "3.5.18-1ubuntu1",
        "3.5.18-1ubuntu1.1",
        "3.5.18-1ubuntu1.2",
        "3.5.18-1ubuntu1.3",
        "3.5.18-1ubuntu1.4",
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        "3.5.18-1ubuntu1.6",
        "3.5.18-1ubuntu1.6+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          },
          {
            "binary_name": "guile-gnutls",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          },
          {
            "binary_name": "libgnutls-dane0",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          },
          {
            "binary_name": "libgnutls-openssl27",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          },
          {
            "binary_name": "libgnutls30",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          },
          {
            "binary_name": "libgnutlsxx28",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.6.13-2ubuntu1.12+esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.13-2ubuntu1.12+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.9-5ubuntu1",
        "3.6.9-5ubuntu2",
        "3.6.10-5",
        "3.6.11.1-2",
        "3.6.11.1-2ubuntu2",
        "3.6.13-2ubuntu1",
        "3.6.13-2ubuntu1.1",
        "3.6.13-2ubuntu1.2",
        "3.6.13-2ubuntu1.3",
        "3.6.13-2ubuntu1.6",
        "3.6.13-2ubuntu1.7",
        "3.6.13-2ubuntu1.8",
        "3.6.13-2ubuntu1.9",
        "3.6.13-2ubuntu1.10",
        "3.6.13-2ubuntu1.11",
        "3.6.13-2ubuntu1.12"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.7.3-4ubuntu1.7"
          },
          {
            "binary_name": "guile-gnutls",
            "binary_version": "3.7.3-4ubuntu1.7"
          },
          {
            "binary_name": "libgnutls-dane0",
            "binary_version": "3.7.3-4ubuntu1.7"
          },
          {
            "binary_name": "libgnutls-openssl27",
            "binary_version": "3.7.3-4ubuntu1.7"
          },
          {
            "binary_name": "libgnutls30",
            "binary_version": "3.7.3-4ubuntu1.7"
          },
          {
            "binary_name": "libgnutlsxx28",
            "binary_version": "3.7.3-4ubuntu1.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.7.3-4ubuntu1.7?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.7.3-4ubuntu1.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.7.1-5ubuntu1",
        "3.7.2-2ubuntu1",
        "3.7.2-4ubuntu1",
        "3.7.2-5ubuntu1",
        "3.7.3-4ubuntu1",
        "3.7.3-4ubuntu1.1",
        "3.7.3-4ubuntu1.2",
        "3.7.3-4ubuntu1.3",
        "3.7.3-4ubuntu1.4",
        "3.7.3-4ubuntu1.5",
        "3.7.3-4ubuntu1.6"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1"
          },
          {
            "binary_name": "guile-gnutls",
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1"
          },
          {
            "binary_name": "libgnutls-dane0",
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1"
          },
          {
            "binary_name": "libgnutls-openssl27",
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1"
          },
          {
            "binary_name": "libgnutls30",
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1"
          },
          {
            "binary_name": "libgnutlsxx28",
            "binary_version": "3.7.3-4ubuntu1.2+Fips1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-preview:22.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.7.3-4ubuntu1.2+Fips1.1?arch=source\u0026distro=fips-preview/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.7.3-4ubuntu1.2+Fips1.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.7.3-4ubuntu1.7+Fips1"
          },
          {
            "binary_name": "guile-gnutls",
            "binary_version": "3.7.3-4ubuntu1.7+Fips1"
          },
          {
            "binary_name": "libgnutls-dane0",
            "binary_version": "3.7.3-4ubuntu1.7+Fips1"
          },
          {
            "binary_name": "libgnutls-openssl27",
            "binary_version": "3.7.3-4ubuntu1.7+Fips1"
          },
          {
            "binary_name": "libgnutls30",
            "binary_version": "3.7.3-4ubuntu1.7+Fips1"
          },
          {
            "binary_name": "libgnutlsxx28",
            "binary_version": "3.7.3-4ubuntu1.7+Fips1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-updates:22.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.7.3-4ubuntu1.7+Fips1?arch=source\u0026distro=fips-updates/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.7.3-4ubuntu1.7+Fips1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.7.3-4ubuntu1.2+Fips1.1",
        "3.7.3-4ubuntu1.3+Fips1.1",
        "3.7.3-4ubuntu1.4+Fips1",
        "3.7.3-4ubuntu1.5+Fips1",
        "3.7.3-4ubuntu1.6+Fips1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.8.3-1.1ubuntu3.4"
          },
          {
            "binary_name": "libgnutls-dane0t64",
            "binary_version": "3.8.3-1.1ubuntu3.4"
          },
          {
            "binary_name": "libgnutls-openssl27t64",
            "binary_version": "3.8.3-1.1ubuntu3.4"
          },
          {
            "binary_name": "libgnutls30t64",
            "binary_version": "3.8.3-1.1ubuntu3.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.8.3-1.1ubuntu3.4?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.3-1.1ubuntu3.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.8.1-4ubuntu1",
        "3.8.1-4ubuntu6",
        "3.8.1-4ubuntu7",
        "3.8.3-1ubuntu1",
        "3.8.3-1.1ubuntu2",
        "3.8.3-1.1ubuntu3",
        "3.8.3-1.1ubuntu3.1",
        "3.8.3-1.1ubuntu3.2",
        "3.8.3-1.1ubuntu3.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.8.3-1.1ubuntu3.4+Fips1"
          },
          {
            "binary_name": "libgnutls-dane0t64",
            "binary_version": "3.8.3-1.1ubuntu3.4+Fips1"
          },
          {
            "binary_name": "libgnutls-openssl27t64",
            "binary_version": "3.8.3-1.1ubuntu3.4+Fips1"
          },
          {
            "binary_name": "libgnutls30t64",
            "binary_version": "3.8.3-1.1ubuntu3.4+Fips1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-updates:24.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.8.3-1.1ubuntu3.4+Fips1?arch=source\u0026distro=fips-updates/noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.3-1.1ubuntu3.4+Fips1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.8.3-1.1ubuntu3.1+Fips1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.8.9-3ubuntu1"
          },
          {
            "binary_name": "libgnutls-dane0t64",
            "binary_version": "3.8.9-3ubuntu1"
          },
          {
            "binary_name": "libgnutls-openssl27t64",
            "binary_version": "3.8.9-3ubuntu1"
          },
          {
            "binary_name": "libgnutls30t64",
            "binary_version": "3.8.9-3ubuntu1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:25.10",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.8.9-3ubuntu1?arch=source\u0026distro=questing"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.9-3ubuntu1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.8.9-2ubuntu3"
      ]
    }
  ],
  "aliases": [],
  "details": "A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not own, leading to a double-free condition when the parent function or caller later attempts to free the same structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of service or memory corruption, depending on allocator behavior.",
  "id": "UBUNTU-CVE-2025-32988",
  "modified": "2026-04-22T07:54:10Z",
  "published": "2025-07-10T08:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-32988"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-32988"
    },
    {
      "type": "REPORT",
      "url": "https://lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.html"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2025-32988"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7635-1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7742-1"
    }
  ],
  "related": [
    "USN-7635-1",
    "USN-7742-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-32988"
  ]
}

CVE-2025-32988 (GCVE-0-2025-32988)

Vulnerability from cvelistv5 – Published: 2025-07-10 08:04 – Updated: 2026-09-01 11:53

Title

Gnutls: vulnerability in gnutls othername san export

Summary

Severity

6.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-07-10 20:04 UTC

CWE

CWE-415 - Double Free

Assigner

redhat redhat root Scorecard

References

15 references

URL	Tags
https://access.redhat.com/errata/RHSA-2025:16115	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:16116	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:17181	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:17348	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:17361	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:17415	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19088	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:22529	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7477	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-32988	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2359622	issue-trackingx_refsource_REDHAT
https://lists.gnupg.org/pipermail/gnutls-help/202…
https://lists.debian.org/debian-lts-announce/2025…
http://www.openwall.com/lists/oss-security/2025/07/11/3
https://cert-portal.siemens.com/productcert/html/…

Impacted products

16 products

Vendor	Product	Version
		Affected: 0 , < 3.8.10 (semver)
Red Hat	Red Hat Enterprise Linux 10	Unaffected: 0:3.8.9-9.el10_0.14 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.0
Red Hat	Red Hat Enterprise Linux 8	Unaffected: 0:3.6.16-8.el8_10.4 , < * (rpm) cpe:/a:redhat:enterprise_linux:8::appstream cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 0:3.8.3-6.el9_6.2 , < * (rpm) cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	Unaffected: 0:3.7.6-21.el9_2.4 , < * (rpm) cpe:/a:redhat:rhel_e4s:9.2::appstream cpe:/o:redhat:rhel_e4s:9.2::baseos
Red Hat	Red Hat Enterprise Linux 9.4 Extended Update Support	Unaffected: 0:3.8.3-4.el9_4.4 , < * (rpm) cpe:/a:redhat:rhel_eus:9.4::appstream cpe:/o:redhat:rhel_eus:9.4::baseos
Red Hat	Red Hat Ceph Storage 7	Unaffected: 7 , < * (rpm) cpe:/a:redhat:ceph_storage:7::el9
Red Hat	Red Hat Discovery 2	Unaffected: 2.3.0-1760554384 , < * (rpm) cpe:/a:redhat:discovery:2::el9
Red Hat	Red Hat Hardened Images	Unaffected: 3.8.12-1.1.hum1 , < * (rpm) cpe:/a:redhat:hummingbird:1
Red Hat	Red Hat Insights proxy 1.5	Unaffected: 1.5.7-1759331989 , < * (rpm) cpe:/a:redhat:insights_proxy:1.5::el9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.5 , < * (custom)
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	Affected: V3.1.5 , < * (custom)
Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.5 , < * (custom)

Date Public

2025-07-10 07:55

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2025-32988",
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                "role": "CISA Coordinator",
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            "versions": [
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USN-7635-1 (UBUNTU-CVE-2025-6395)

Vulnerability from osv_ubuntu – Published: 2025-07-14 12:23 – Updated: 2026-04-27 14:11 – Source website

Summary

gnutls28 vulnerabilities

Details

It was discovered that GnuTLS incorrectly handled exporting Subject Alternative Name (SAN) entries containing an otherName. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-32988)

It was discovered that GnuTLS incorrectly handled parsing the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension. A remote attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2025-32989)

It was discovered that the GnuTLS certtool utility incorrectly handled parsing certain template files. An attacker could use this issue to cause GnuTLS to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2025-32990)

Stefan Bühler discovered that GnuTLS incorrectly handled parsing certain template files. An attacker could possibly use this issue to cause GnuTLS to crash, resulting in a denial of service. (CVE-2025-6395)

References

URL

Type

	https://ubuntu.com/security/notices/USN-7635-1	ADVISORY
	https://ubuntu.com/security/CVE-2025-6395	REPORT
	https://ubuntu.com/security/CVE-2025-32988	REPORT
	https://ubuntu.com/security/CVE-2025-32989	REPORT
	https://ubuntu.com/security/CVE-2025-32990	REPORT

JSON

To clipboard

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            "binary_version": "3.8.3-1.1ubuntu3.4"
          },
          {
            "binary_name": "libgnutls-openssl27t64",
            "binary_version": "3.8.3-1.1ubuntu3.4"
          },
          {
            "binary_name": "libgnutls30t64",
            "binary_version": "3.8.3-1.1ubuntu3.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.8.3-1.1ubuntu3.4?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.8.3-1.1ubuntu3.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.8.1-4ubuntu1",
        "3.8.1-4ubuntu6",
        "3.8.1-4ubuntu7",
        "3.8.3-1ubuntu1",
        "3.8.3-1.1ubuntu2",
        "3.8.3-1.1ubuntu3",
        "3.8.3-1.1ubuntu3.1",
        "3.8.3-1.1ubuntu3.2",
        "3.8.3-1.1ubuntu3.3"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that GnuTLS incorrectly handled exporting Subject\nAlternative Name (SAN) entries containing an otherName. A remote attacker\ncould use this issue to cause GnuTLS to crash, resulting in a denial of\nservice, or possibly execute arbitrary code. (CVE-2025-32988)\n\nIt was discovered that GnuTLS incorrectly handled parsing the Certificate\nTransparency (CT) Signed Certificate Timestamp (SCT) extension. A remote\nattacker could use this issue to cause GnuTLS to crash, resulting in a\ndenial of service, or possibly obtain sensitive information.\n(CVE-2025-32989)\n\nIt was discovered that the GnuTLS certtool utility incorrectly handled\nparsing certain template files. An attacker could use this issue to cause\nGnuTLS to crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2025-32990)\n\nStefan B\u00fchler discovered that GnuTLS incorrectly handled parsing certain\ntemplate files. An attacker could possibly use this issue to cause GnuTLS\nto crash, resulting in a denial of service. (CVE-2025-6395)",
  "id": "USN-7635-1",
  "modified": "2026-04-27T14:11:44Z",
  "published": "2025-07-14T12:23:41Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7635-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-6395"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-32988"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-32989"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-32990"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "gnutls28 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2025-6395",
    "UBUNTU-CVE-2025-32988",
    "UBUNTU-CVE-2025-32989",
    "UBUNTU-CVE-2025-32990"
  ]
}

USN-7742-1 (UBUNTU-CVE-2025-6395)

Vulnerability from osv_ubuntu – Published: 2025-09-09 13:45 – Updated: 2026-06-25 10:46 – Source website

Summary

gnutls28 vulnerabilities

Details

References

URL

Type

	https://ubuntu.com/security/notices/USN-7742-1	ADVISORY
	https://ubuntu.com/security/CVE-2025-6395	REPORT
	https://ubuntu.com/security/CVE-2025-32988	REPORT
	https://ubuntu.com/security/CVE-2025-32990	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-32990",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.4.10-4ubuntu1.9+esm2"
          },
          {
            "binary_name": "guile-gnutls",
            "binary_version": "3.4.10-4ubuntu1.9+esm2"
          },
          {
            "binary_name": "libgnutls-openssl27",
            "binary_version": "3.4.10-4ubuntu1.9+esm2"
          },
          {
            "binary_name": "libgnutls30",
            "binary_version": "3.4.10-4ubuntu1.9+esm2"
          },
          {
            "binary_name": "libgnutlsxx28",
            "binary_version": "3.4.10-4ubuntu1.9+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.4.10-4ubuntu1.9+esm2?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.4.10-4ubuntu1.9+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.3.15-5ubuntu2",
        "3.3.18-1ubuntu1",
        "3.3.20-1ubuntu1",
        "3.4.9-2ubuntu1",
        "3.4.10-4ubuntu1",
        "3.4.10-4ubuntu1.1",
        "3.4.10-4ubuntu1.2",
        "3.4.10-4ubuntu1.3",
        "3.4.10-4ubuntu1.4",
        "3.4.10-4ubuntu1.5",
        "3.4.10-4ubuntu1.6",
        "3.4.10-4ubuntu1.7",
        "3.4.10-4ubuntu1.8",
        "3.4.10-4ubuntu1.9",
        "3.4.10-4ubuntu1.9+esm1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-32988",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-32990",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.5.18-1ubuntu1.6+esm2"
          },
          {
            "binary_name": "libgnutls-dane0",
            "binary_version": "3.5.18-1ubuntu1.6+esm2"
          },
          {
            "binary_name": "libgnutls-openssl27",
            "binary_version": "3.5.18-1ubuntu1.6+esm2"
          },
          {
            "binary_name": "libgnutls30",
            "binary_version": "3.5.18-1ubuntu1.6+esm2"
          },
          {
            "binary_name": "libgnutlsxx28",
            "binary_version": "3.5.18-1ubuntu1.6+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.5.18-1ubuntu1.6+esm2?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.5.18-1ubuntu1.6+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.5.8-6ubuntu3",
        "3.5.17-1ubuntu1",
        "3.5.17-1ubuntu3",
        "3.5.18-1ubuntu1",
        "3.5.18-1ubuntu1.1",
        "3.5.18-1ubuntu1.2",
        "3.5.18-1ubuntu1.3",
        "3.5.18-1ubuntu1.4",
        "3.5.18-1ubuntu1.5",
        "3.5.18-1ubuntu1.6",
        "3.5.18-1ubuntu1.6+esm1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2025-6395",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-32988",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2025-32990",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L",
                  "type": "CVSS_V3"
                },
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "gnutls-bin",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          },
          {
            "binary_name": "guile-gnutls",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          },
          {
            "binary_name": "libgnutls-dane0",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          },
          {
            "binary_name": "libgnutls-openssl27",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          },
          {
            "binary_name": "libgnutls30",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          },
          {
            "binary_name": "libgnutlsxx28",
            "binary_version": "3.6.13-2ubuntu1.12+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "gnutls28",
        "purl": "pkg:deb/ubuntu/gnutls28@3.6.13-2ubuntu1.12+esm1?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.6.13-2ubuntu1.12+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.9-5ubuntu1",
        "3.6.9-5ubuntu2",
        "3.6.10-5",
        "3.6.11.1-2",
        "3.6.11.1-2ubuntu2",
        "3.6.13-2ubuntu1",
        "3.6.13-2ubuntu1.1",
        "3.6.13-2ubuntu1.2",
        "3.6.13-2ubuntu1.3",
        "3.6.13-2ubuntu1.6",
        "3.6.13-2ubuntu1.7",
        "3.6.13-2ubuntu1.8",
        "3.6.13-2ubuntu1.9",
        "3.6.13-2ubuntu1.10",
        "3.6.13-2ubuntu1.11",
        "3.6.13-2ubuntu1.12"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that GnuTLS incorrectly handled exporting Subject\nAlternative Name (SAN) entries containing an otherName. A remote attacker\ncould use this issue to cause GnuTLS to crash, resulting in a denial of\nservice, or possibly execute arbitrary code. This issue only affected\nUbuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2025-32988)\n\nIt was discovered that the GnuTLS certtool utility incorrectly handled\nparsing certain template files. An attacker could use this issue to cause\nGnuTLS to crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2025-32990)\n\nStefan B\u00fchler discovered that GnuTLS incorrectly handled parsing certain\ntemplate files. An attacker could possibly use this issue to cause GnuTLS\nto crash, resulting in a denial of service. This issue only affected\nUbuntu 20.04 LTS. (CVE-2025-6395)",
  "id": "USN-7742-1",
  "modified": "2026-06-25T10:46:56Z",
  "published": "2025-09-09T13:45:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7742-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-6395"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-32988"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-32990"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "gnutls28 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2025-6395",
    "UBUNTU-CVE-2025-32988",
    "UBUNTU-CVE-2025-32990"
  ]
}

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.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

UBUNTU-CVE-2025-32988 (CVE-2025-32988)

CVE-2025-32988 (GCVE-0-2025-32988)

USN-7635-1 (UBUNTU-CVE-2025-6395)

USN-7742-1 (UBUNTU-CVE-2025-6395)

Tags

Sightings

Nomenclature

Related by attack behaviour