SB2016092809 - Security restrictions bypass in gnutls (Alpine package)
Published: September 28, 2016
Security Bulletin ID
SB2016092809
Severity
Low
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) Security restrictions bypass (CVE-ID: CVE-2016-7444)
The vulnerability allows a remote unauthenticated attacker to bypass security restrictions on the target system.The weakness exists due to insufficient validation of the serial length of an OCSP response by the gnutls_ocsp_resp_check_crt function in the lib/x509/ocsp.c code. A remote attacker can bypass certificate validation and conduct further attacks.
Remediation
Install update from vendor's website.
References
- https://git.alpinelinux.org/aports/commit/?id=3c67fa3526b7b2bba61227d0fc519ceef3d13009
- https://git.alpinelinux.org/aports/commit/?id=f1160ab71f617ea35209d64df0f4aa4d304dcc64
- https://git.alpinelinux.org/aports/commit/?id=2715d01533f44ce862bbe92a5dd487a643b98b7d
- https://git.alpinelinux.org/aports/commit/?id=0df0c8fd24cdd416fe05c7385125ceaf701e35b8