CVE-2015-0291: OpenSSL

Medium severity, CVSS 5.0. EPSS: 6.9% chance of exploitation in the next 30 days.

The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation.

Affected products

• OpenSSL OpenSSL: version 1.0.2 only

Published 2015-03-19. Last modified 2026-06-17.