The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2025:16116 advisory.

    The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements     cryptographic algorithms and protocols such as SSL, TLS, and DTLS.

    Security Fix(es):

    * gnutls: Vulnerability in GnuTLS certtool template parsing (CVE-2025-32990)

    * gnutls: Vulnerability in GnuTLS SCT extension parsing (CVE-2025-32989)

    * gnutls: Vulnerability in GnuTLS otherName SAN export (CVE-2025-32988)

    * gnutls: NULL pointer dereference in _gnutls_figure_common_ciphersuite() (CVE-2025-6395)

    Bug Fix(es) and Enhancement(s):

    * gnutls: Vulnerability in GnuTLS certtool template parsing (BZ#2359620)

    * gnutls: Vulnerability in GnuTLS SCT extension parsing (BZ#2359621)

    * gnutls: Vulnerability in GnuTLS otherName SAN export (BZ#2359622)

    * gnutls: NULL pointer dereference in _gnutls_figure_common_ciphersuite() (BZ#2376755)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of gnutls installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-32990 advisory.

  - A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic     within the certtool utility. When it reads certain settings from a template file, it allows an attacker to     cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service     (DoS) that could potentially crash the system. (CVE-2025-32990)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-5962 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-5962-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     July 16, 2025                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : gnutls28     CVE ID         : CVE-2025-6395 CVE-2025-32988 CVE-2025-32989 CVE-2025-32990

    Multiple security issues were discovered in GNU TLS, which could result in     denial of service.

    For the stable distribution (bookworm), these problems have been fixed in     version 3.7.9-2+deb12u5.

    We recommend that you upgrade your gnutls28 packages.

    For the detailed security status of gnutls28 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/gnutls28

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4267 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4267-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/                          Adrian Bunk     August 09, 2025                               https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : gnutls28     Version        : 3.7.1-5+deb11u8     CVE ID         : CVE-2025-6395 CVE-2025-32988 CVE-2025-32990

    Multiple vulnerabilities have been fixed in GnuTLS, a library     implementing the SSL, TLS and DTLS protocols.

    CVE-2025-6395

        NULL dereference when 2nd Client Hello omits PSK

    CVE-2025-32988

        Double-free upon error when exporting otherName in SAN

    CVE-2025-32990

        1-byte write buffer overrun in certtool

    For Debian 11 bullseye, these problems have been fixed in version     3.7.1-5+deb11u8.

    We recommend that you upgrade your gnutls28 packages.

    For the detailed security status of gnutls28 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/gnutls28

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2025:02520-1 advisory.

    - CVE-2025-32990: Fix 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:02595-1 advisory.

    - CVE-2025-6395: Fix NULL pointer dereference when 2nd Client Hello omits PSK (bsc#1246299)
    - CVE-2025-32988: Fix double-free due to incorrect ownership handling in the export logic of SAN entries     containing an otherName (bsc#1246232)
    - CVE-2025-32989: Fix heap buffer overread when handling the CT SCT extension during X.509 certificate     parsing (bsc#1246233)
    - CVE-2025-32990: Fix 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-202509-08 (GnuTLS: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in GnuTLS. Please review the CVE identifiers referenced     below for details.

Tenable has extracted the preceding description block directly from the Gentoo Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 host has packages installed that are affected by a vulnerability as referenced in the SUSE- SU-2025:02521-1 advisory.

    - CVE-2025-32990: Fix 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 42 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2025-16a24364ce advisory.

    This updates gnutls to the latest upstream release. Notable changes are:

    * PKCS#11 cryptographic provider support
    * Support for kTLS rekeying with kernel 6.14+
    * Support for the almost standardized ML-DSA private key formats

    This also fixes 4 CVEs (CVE-2025-32989, CVE-2025-6395, CVE-2025-32988, and CVE-2025-32990).

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7635-1 advisory.

    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 Bhler 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)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

An update of the gnutls package has been released.

The version of gnutls installed on the remote host is prior to 3.3.29-9. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2025-2969 advisory.

    A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic     within the certtool utility. When it reads certain settings from a template file, it allows an attacker to     cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service     (DoS) that could potentially crash the system. (CVE-2025-32990)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic     within the certtool utility. When it reads certain settings from a template file, it allows an attacker to     cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service     (DoS) that could potentially crash the system. (CVE-2025-32990)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
265352	RHEL 9 : gnutls (RHSA-2025:16116)	Nessus	Red Hat Local Security Checks	9/17/2025	9/17/2025	high
242854	Azure Linux 3.0 Security Update: gnutls (CVE-2025-32990)	Nessus	Azure Linux Local Security Checks	7/25/2025	9/15/2025	high
242186	Debian dsa-5962 : gnutls-bin - security update	Nessus	Debian Local Security Checks	7/16/2025	7/16/2025	medium
247128	Debian dla-4267 : gnutls-bin - security update	Nessus	Debian Local Security Checks	8/9/2025	8/9/2025	medium
242864	SUSE SLES12 Security Update : gnutls (SUSE-SU-2025:02520-1)	Nessus	SuSE Local Security Checks	7/26/2025	7/26/2025	medium
243296	SUSE SLED15 / SLES15 / openSUSE 15 Security Update : gnutls (SUSE-SU-2025:02595-1)	Nessus	SuSE Local Security Checks	8/2/2025	8/2/2025	medium
265361	GLSA-202509-08 : GnuTLS: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	9/18/2025	9/18/2025	high
242868	SUSE SLES12 Security Update : gnutls (SUSE-SU-2025:02521-1)	Nessus	SuSE Local Security Checks	7/26/2025	7/26/2025	medium
242043	Fedora 42 : gnutls (2025-16a24364ce)	Nessus	Fedora Local Security Checks	7/13/2025	7/13/2025	medium
242198	Ubuntu 22.04 LTS / 24.04 LTS / 25.04 : GnuTLS vulnerabilities (USN-7635-1)	Nessus	Ubuntu Local Security Checks	7/16/2025	7/16/2025	medium
242667	Photon OS 5.0: Gnutls PHSA-2025-5.0-0561	Nessus	PhotonOS Local Security Checks	7/24/2025	7/24/2025	medium
252298	Amazon Linux 2 : gnutls (ALAS-2025-2969)	Nessus	Amazon Linux Local Security Checks	8/19/2025	8/19/2025	high
246033	Linux Distros Unpatched Vulnerability : CVE-2025-32990	Nessus	Misc.	8/8/2025	9/20/2025	high

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