#VU10425 Improper input validation in OpenBSD

Vulnerability identifier: #VU10425

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 IPv6 fragments, incorrectly access memory of an mbuf chain that is not within an mbuf and cause the kernel to crash.

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/035_prevhdr.patch.sig