Security restrictions bypass in OpenBSD - #VU12879

Vulnerability identifier: #VU12879

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: N/A

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: OpenBSD

Affected software:
OpenBSD

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists in the gif(4) interface due to insufficient validation of user-supplied input. A remote attacker can use the specified protocol for IPv6, plug a mbuf leak and avoid a use after free.

Update to version 6.3.

• https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/004_gif.patch.sig