Buffer overflow in OpenSSH - #VU67904
Published: October 4, 2022
Vulnerability identifier: #VU67904
CSH Severity: Low
CVSS v4: 5.1 [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]
CVE-ID: N/A
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error when processing SSH banners in ssh-keyscan(1). A remote attacker can use a specially crafted banner to trigger a one-byte buffer overflow and perform a denial of service (DoS) attack.
Affected software
OpenSSH
Remediation
Install updates from vendor's website.
OpenSSH - update to 9.1p1