Main Vulnerability Database Vulnerabilities #VU12884

#VU12884 Improper input validation in OpenBSD

Published: May 21, 2018

Vulnerability identifier: #VU12884

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

Description

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

The weakness exists due to additional data is inadvertently removed when private keys are cleared from TLS configuration. A remote attacker can submit specially crafted input and prevent OCSP from functioning correctly.

Remediation

Update to version 6.3.

External links

https://ftp.openbsd.org/pub/OpenBSD/patches/6.3/common/002_libtls.patch.sig