Heap-based buffer overflow in GnuTLS - CVE-2025-32989

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Main Vulnerability Database Vulnerabilities #VU112992

Heap-based buffer overflow in GnuTLS - CVE-2025-32989

Published: July 16, 2025


Vulnerability identifier: #VU112992
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2025-32989
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when handling the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. A remote attacker can supply a specially crafted X.509 certificate to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

GnuTLS
Gentoo Linux
Debian Linux
SUSE Linux Enterprise Server 15 SP5
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise High Performance Computing ESPOS 15
SUSE Linux Enterprise High Performance Computing LTSS 15
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Desktop 15
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
SUSE Linux Enterprise Micro for Rancher
SUSE Linux Enterprise Micro
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Basesystem Module
openSUSE Leap
Ubuntu
Anolis OS
openEuler
Fedora
Netezza Appliance
Storage Defender - Resiliency Service
Storage Virtualize
Robotic Process Automation for Cloud Pak
IBM Observability with Instana
Netcool Operations Insight
Cryostat
Red Hat Advanced Cluster Management for Kubernetes
App Connect Enterprise Certified Container
LANTIME Operating System Firmware (LTOS)
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
gnutls28 (Ubuntu package)
gnutls
libgnutls30-64bit
libgnutls30-hmac-64bit
libgnutls-devel-64bit
libgnutls30-64bit-debuginfo
libgnutls30-32bit
libgnutls30-hmac-32bit
libgnutls30-32bit-debuginfo
libgnutls-devel-32bit
libgnutlsxx28-debuginfo
libgnutls30
gnutls-guile
gnutls-debuginfo
libgnutlsxx28
libgnutlsxx-devel
libgnutls-devel
gnutls-guile-debuginfo
libgnutls30-debuginfo
libgnutls30-hmac
gnutls-debugsource
gnutls (Red Hat package)
gnutls28 (Debian package)
gnutls-doc
gnutls-c++
gnutls-dane
gnutls-devel
gnutls-utils
gnutls-help
libgnutlsxx30-debuginfo
libgnutlsxx30
net-libs/gnutls
Multicluster Engine for Kubernetes
OpenShift Virtualization
AMQ Broker

How to mitigate CVE-2025-32989

Install updates from vendor's website.

GnuTLS - update to 3.8.10
Netezza Appliance - update to 1.0.0.1
IBM Observability with Instana - update to 1.0.308
Netcool Operations Insight - update to 1.6.15
Storage Defender - Resiliency Service - update to 2.0.18
Cryostat - update to 4.0.3
LANTIME Operating System Firmware (LTOS) - update to 7.08.025
Storage Virtualize - addressed in versions 8.4.0.19, 8.5.0.17, 8.6.0.10, 8.7.0.8, 9.1.0.2, 9.1.1.0
Robotic Process Automation for Cloud Pak - addressed in versions 23.0.20.5, 30.0.1
Multicluster Engine for Kubernetes - update to 2.7.6
Red Hat Advanced Cluster Management for Kubernetes - update to 2.12.5
gnutls28 (Ubuntu package) - addressed in versions 3.7.3-4ubuntu1.7, 3.8.3-1.1ubuntu3.4, 3.8.9-2ubuntu3.1
gnutls - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
libgnutls30-64bit - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
libgnutls30-hmac-64bit - update to 3.7.3-150400.4.50.1
libgnutls-devel-64bit - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
libgnutls30-64bit-debuginfo - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
libgnutls30-32bit - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
libgnutls30-hmac-32bit - update to 3.7.3-150400.4.50.1
libgnutls30-32bit-debuginfo - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
libgnutls-devel-32bit - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
libgnutlsxx28-debuginfo - update to 3.7.3-150400.4.50.1
libgnutls30 - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
gnutls-guile - update to 3.7.3-150400.4.50.1
gnutls-debuginfo - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
libgnutlsxx28 - update to 3.7.3-150400.4.50.1
libgnutlsxx-devel - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
libgnutls-devel - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
gnutls-guile-debuginfo - update to 3.7.3-150400.4.50.1
libgnutls30-debuginfo - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
libgnutls30-hmac - update to 3.7.3-150400.4.50.1
gnutls-debugsource - addressed in versions 3.7.3-150400.4.50.1, 3.8.3-150600.4.9.1
gnutls (Red Hat package) - addressed in versions 3.7.6-21.el9_2.4, 3.8.3-4.el9_4.4, 3.8.3-6.el9_6.2, 3.8.9-9.el10_0.14
gnutls28 (Debian package) - update to 3.7.9-2+deb12u5
gnutls-doc - update to 3.8.2-4
gnutls-c++ - update to 3.8.2-4
gnutls-dane - update to 3.8.2-4
gnutls-devel - update to 3.8.2-4
gnutls-utils - update to 3.8.2-4
gnutls - update to 3.8.2-4
gnutls-help - update to 3.8.2-7
gnutls - update to 3.8.2-7
gnutls-dane - update to 3.8.2-7
gnutls-debuginfo - update to 3.8.2-7
gnutls-debugsource - update to 3.8.2-7
gnutls-devel - update to 3.8.2-7
gnutls-utils - update to 3.8.2-7
libgnutlsxx30-debuginfo - update to 3.8.3-150600.4.9.1
libgnutlsxx30 - update to 3.8.3-150600.4.9.1
net-libs/gnutls - update to 3.8.10
gnutls - update to 3.8.10-1.fc42
OpenShift Virtualization - update to 4.19.17
AMQ Broker - update to 7.13.2
App Connect Enterprise Certified Container - update to 12.0.17

External References

Related Security Bulletins