K16317 : OpenSSL vulnerability CVE-2015-0286

Security Advisory Description

The ASN1_TYPE_cmp function in crypto/asn1/a_type.c in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a does not properly perform Boolean-type comparisons, which allows remote attackers to cause a denial of service (invalid read operation and application crash) via a crafted X.509 certificate to an endpoint that uses the certificate-verification feature. (CVE-2015-0286)
Impact
An attacker may be able to cause a denial-of-service (DoS) attack using a crafted X.509 certificate.
F5 has evaluated this vulnerability as having medium impact to the BIG-IP product line for the following reasons:

• There are no known functional exploits for the issue at this time.
• The upstream vendor of the software in question (OpenSSL) has classified this issue as having a moderate impact.
• This issue does not impact overall system stability. According to upstream vendor guidance, this vulnerability causes only a partial impact of availability.