SB2014030705 - Permissions, Privileges, and Access Controls in GnuTLS
Published: March 7, 2014 Updated: July 28, 2020
Security Bulletin ID
SB2014030705
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2014-1959)
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
lib/x509/verify.c in GnuTLS before 3.1.21 and 3.2.x before 3.2.11 treats version 1 X.509 certificates as intermediate CAs, which allows remote attackers to bypass intended restrictions by leveraging a X.509 V1 certificate from a trusted CA to issue new certificates.
Remediation
Install update from vendor's website.
References
- http://seclists.org/oss-sec/2014/q1/344
- http://seclists.org/oss-sec/2014/q1/345
- http://www.debian.org/security/2014/dsa-2866
- http://www.gnutls.org/security.html
- http://www.securityfocus.com/bid/65559
- http://www.ubuntu.com/usn/USN-2121-1
- https://www.gitorious.org/gnutls/gnutls/commit/b1abfe3d182d68539900092eb42fc62cf1bb7e7c