OpenSSL 1.0.2 < 1.0.2j Multiple DoS
Medium Nessus Network Monitor Plugin ID 9627
SynopsisThe remote web server is running an outdated instance of OpenSSL and that is affected by multiple Denial of Service (DoS) vulnerabilities.
DescriptionAccording to its banner, the version of OpenSSL on the remote host is 1.0.2 prior to 1.0.2j and is affected by multiple DoS vulnerabilities :
- A flaw exists in the CRL functionality that is triggered when handling a certificate revocation list (CRL). With a specially crafted CRL, a context-dependent attacker can cause the service to crash due to a NULL pointer being dereferenced. (CVE-2016-7052)
- A flaw exists that is triggered when handling many consecutive 'SSL3_AL_WARNING' undefined alerts. By continuously sending warning alerts, a remote attacker can cause a process linked against the library to exhaust available CPU resources and potentially stop responding. (CVE-2016-8610)
SolutionUpgrade OpenSSL to version 1.0.2j or higher.