vulnerability
Red Hat: CVE-2025-32989: gnutls: Vulnerability in GnuTLS SCT extension parsing (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:P/I:N/A:N) | Jul 10, 2025 | Jul 11, 2025 | Jan 28, 2026 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:P/I:N/A:N)
Published
Jul 10, 2025
Added
Jul 11, 2025
Modified
Jan 28, 2026
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
no-fix-redhat-rpm-packageredhat-upgrade-gnutlsredhat-upgrade-gnutls-credhat-upgrade-gnutls-c-debuginforedhat-upgrade-gnutls-daneredhat-upgrade-gnutls-dane-debuginforedhat-upgrade-gnutls-debuginforedhat-upgrade-gnutls-debugsourceredhat-upgrade-gnutls-develredhat-upgrade-gnutls-utilsredhat-upgrade-gnutls-utils-debuginfo
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