vulnerability
Ubuntu: USN-7635-1 (CVE-2025-32989): GnuTLS vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Jul 10, 2025 | Jul 14, 2025 | Aug 18, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
Jul 10, 2025
Added
Jul 14, 2025
Modified
Aug 18, 2025
Description
A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a malformed SCT extension (OID 1.3.6.1.4.1.11129.2.4.2) that contains sensitive data. This issue leads to the exposure of confidential information when GnuTLS verifies certificates from certain websites when the certificate (SCT) is not checked correctly.
Solutions
ubuntu-upgrade-libgnutls30ubuntu-upgrade-libgnutls30t64
References
- CVE-2025-32989
- https://attackerkb.com/topics/CVE-2025-32989
- CWE-295
- UBUNTU-USN-7635-1
- URL-https://access.redhat.com/security/cve/CVE-2025-32989
- URL-https://lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.html
- URL-https://ubuntu.com/security/notices/USN-7635-1
- URL-https://www.cve.org/CVERecord?id=CVE-2025-32989
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