SB2016050516 - Input validation error in libtasn1 (Alpine package)
Published: May 5, 2016
Security Bulletin ID
SB2016050516
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2016-4008)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the _asn1_extract_der_octet() function in lib/decoding.c when parsing certificates. A remote attacker can supply a specially crafted certificate file and crash the affected application.
Successful exploitation of the vulnerability requires that ASN1_DECODE_FLAG_STRICT_DER flag is not used.
Remediation
Install update from vendor's website.