#VU10424 Improper input validation in OpenBSD

Vulnerability identifier: #VU10424

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: N/A

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
OpenBSD

Software vendor:
OpenBSD

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to improper input validation. A remote attacker can supply specially crafted IPsec AH packets with IP options or IPv6 extension and cause the kernel to crash or hang.

Install update from vendor's website.

• http://www.openbsd.org/errata61.html
• http://www.openbsd.org/errata62.html
• https://ftp.openbsd.org/pub/OpenBSD/patches/6.1/common/034_ahopts.patch.sig