CVEs-PoC/2013/CVE-2013-2061.md

CVE-2013-2061

Description

The openvpn_decrypt function in crypto.c in OpenVPN 2.3.0 and earlier, when running in UDP mode, allows remote attackers to obtain sensitive information via a timing attack involving an HMAC comparison function that does not run in constant time and a padding oracle attack on the CBC mode cipher.

POC

Reference

• https://community.openvpn.net/openvpn/wiki/SecurityAnnouncement-f375aa67cc

Github

• https://github.com/ARPSyndicate/cve-scores