vulnerability
Red Hat: CVE-2021-20231: CVE-2021-20231 gnutls: Use after free in client key_share extension (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | Mar 12, 2021 | Nov 10, 2021 | Aug 11, 2025 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Mar 12, 2021
Added
Nov 10, 2021
Modified
Aug 11, 2025
Description
A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.
Solutions
redhat-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-debuginforedhat-upgrade-nettleredhat-upgrade-nettle-debuginforedhat-upgrade-nettle-debugsourceredhat-upgrade-nettle-devel
NEW
Explore Exposure Command
Confidently identify and prioritize exposures from endpoint to cloud with full attack surface visibility and threat-aware risk context.