#VU69362 Out-of-bounds read in heimdal - CVE-2022-41916
Published: November 16, 2022
Vulnerability identifier: #VU69362
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-41916
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
heimdal
heimdal
Software vendor:
Heimdal Software
Heimdal Software
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition in Heimdal's PKI certificate validation library. A remote attacker can pass a specially crafted certificate to the affected application, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.
The vulnerability affects KDC (via PKINIT), kinit (via PKINIT), as well as any third-party applications using Heimdal's libhx509.
Remediation
Install updates from vendor's website.