CVE-2025-32990: Heap-based Buffer Overflow
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.
AI Analysis
Technical Summary
A heap-buffer-overflow (off-by-one) vulnerability exists in the template parsing logic of the certtool utility within GnuTLS. When processing specific settings from a template file, this flaw permits an out-of-bounds NULL pointer write, leading to memory corruption and denial-of-service. This vulnerability affects GnuTLS versions shipped with Red Hat Enterprise Linux 9 and 10, specifically versions >=9.0.0 <9.9.0 and >=10.0.0 <10.3.0. Red Hat has released security advisories RHSA-2025:16115 and RHSA-2025:16116 providing patches and updates to remediate this issue. The CVSS v3.1 base score is 6.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L), indicating a medium severity impact primarily causing integrity and availability loss without confidentiality impact. No exploits in the wild have been reported.
Potential Impact
Successful exploitation results in memory corruption due to an out-of-bounds NULL pointer write, causing denial-of-service conditions such as application or system crashes. The vulnerability does not impact confidentiality but affects integrity and availability of the affected system. There are no known active exploits in the wild.
Mitigation Recommendations
Red Hat has released official security updates for GnuTLS that address this vulnerability. Users of Red Hat Enterprise Linux 9 and 10 should apply the relevant security advisories RHSA-2025:16115 and RHSA-2025:16116 promptly to update the gnutls packages. Detailed update instructions are available at https://access.redhat.com/articles/11258. Applying these updates mitigates the vulnerability. No additional mitigation actions are required beyond applying the official patches.
CVE-2025-32990: Heap-based Buffer Overflow
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.
CVSS v3.1
Score 6.5medium
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
A heap-buffer-overflow (off-by-one) vulnerability exists in the template parsing logic of the certtool utility within GnuTLS. When processing specific settings from a template file, this flaw permits an out-of-bounds NULL pointer write, leading to memory corruption and denial-of-service. This vulnerability affects GnuTLS versions shipped with Red Hat Enterprise Linux 9 and 10, specifically versions >=9.0.0 <9.9.0 and >=10.0.0 <10.3.0. Red Hat has released security advisories RHSA-2025:16115 and RHSA-2025:16116 providing patches and updates to remediate this issue. The CVSS v3.1 base score is 6.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L), indicating a medium severity impact primarily causing integrity and availability loss without confidentiality impact. No exploits in the wild have been reported.
Potential Impact
Successful exploitation results in memory corruption due to an out-of-bounds NULL pointer write, causing denial-of-service conditions such as application or system crashes. The vulnerability does not impact confidentiality but affects integrity and availability of the affected system. There are no known active exploits in the wild.
Mitigation Recommendations
Red Hat has released official security updates for GnuTLS that address this vulnerability. Users of Red Hat Enterprise Linux 9 and 10 should apply the relevant security advisories RHSA-2025:16115 and RHSA-2025:16116 promptly to update the gnutls packages. Detailed update instructions are available at https://access.redhat.com/articles/11258. Applying these updates mitigates the vulnerability. No additional mitigation actions are required beyond applying the official patches.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- redhat
- Date Reserved
- 2025-04-15T01:31:12.104Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://access.redhat.com/errata/RHSA-2025:16115","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2025:16116","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2025:17181","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2025:17348","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2025:17361","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2025:17415","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2025:19088","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2025:22529","vendor":"Red Hat"},{"url":"https://access.redhat.com/errata/RHSA-2026:7477","vendor":"Red Hat"},{"url":"https://access.redhat.com/security/cve/CVE-2025-32990","vendor":"Red Hat"}]
Threat ID: 686f8bdfa83201eaaca6d794
Added to database: 07/10/2025, 09:46:07 UTC
Last enriched: 07/02/2026, 22:11:43 UTC
Last updated: 09/10/2026, 19:36:50 UTC
Views: 264
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