vulnerability
Ubuntu: USN-5800-1 (CVE-2021-44758): Heimdal vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:N/I:N/A:C) | Dec 26, 2022 | Jan 13, 2023 | Apr 16, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
Dec 26, 2022
Added
Jan 13, 2023
Modified
Apr 16, 2026
Description
Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept.
Solutions
ubuntu-pro-upgrade-libasn1-8-heimdalubuntu-pro-upgrade-libgssapi3-heimdalubuntu-pro-upgrade-libhdb9-heimdalubuntu-pro-upgrade-libhx509-5-heimdalubuntu-pro-upgrade-libkrb5-26-heimdalubuntu-upgrade-libasn1-8-heimdalubuntu-upgrade-libgssapi3-heimdalubuntu-upgrade-libhdb9-heimdalubuntu-upgrade-libhx509-5-heimdalubuntu-upgrade-libkrb5-26-heimdal
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.