#VU67905 Double Free in OpenSSH
Published: October 4, 2022
Vulnerability identifier: #VU67905
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-415
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
OpenSSH
OpenSSH
Software vendor:
OpenSSH
OpenSSH
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error in ssh-keygen(1) when reading files. A remote attacker can trick the victim into using a specially crafted file to trigger a double free error when handling the path of file hashing step in signing/verify code and crash the application.
Remediation
Install updates from vendor's website.