SB2013051603 - Information disclosure in openvpn (Alpine package)
Published: May 16, 2013
Security Bulletin ID
SB2013051603
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Information disclosure (CVE-ID: CVE-2013-2061)
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
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.
Remediation
Install update from vendor's website.