CVE-2025-32990: gnutls Heap Overflow — Fix

Description

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.

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CVSS v3.1 Score

6.5

MEDIUM

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

Weakness Type (CWE)

CWE-122 CWE-122

Affected Products

Vendor	Product	Versions
gnu	gnutls	All
redhat	openshift_container_platform	All
redhat	enterprise_linux	All
redhat	enterprise_linux	All
redhat	enterprise_linux	All
redhat	enterprise_linux	All
redhat	enterprise_linux	All

References

Advisories & Patches

https://access.redhat.com/security/cve/CVE-2025-32990

Other References

https://access.redhat.com/errata/RHSA-2025:16115 https://access.redhat.com/errata/RHSA-2025:16116 https://access.redhat.com/errata/RHSA-2025:17181 https://access.redhat.com/errata/RHSA-2025:17348 https://access.redhat.com/errata/RHSA-2025:17361 https://access.redhat.com/errata/RHSA-2025:17415 https://access.redhat.com/errata/RHSA-2025:19088 https://access.redhat.com/errata/RHSA-2025:22529 https://access.redhat.com/errata/RHSA-2026:7477 https://bugzilla.redhat.com/show_bug.cgi?id=2359620

Frequently Asked Questions

What is CVE-2025-32990? +

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. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2025-32990? +

CVE-2025-32990 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-32990? +

CVE-2025-32990 affects products from gnu, redhat, specifically: enterprise_linux, gnutls, openshift_container_platform. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-32990? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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