IBM Tivoli Directory Server < 184.108.40.206 / 220.127.116.11 / 18.104.22.168 / 22.214.171.124 with GSKit < 126.96.36.199 / 188.8.131.52 TLS Side-Channel Timing Information Disclosure
Medium Nessus Plugin ID 80481
SynopsisThe remote host has a library installed that is affected by an information disclosure vulnerability.
DescriptionThe remote host is running a version of IBM Tivoli Directory Server and a version of IBM Global Security Kit (GSKit) that is affected by an information disclosure vulnerability. The Transport Layer Security (TLS) protocol does not properly consider timing side-channel attacks, which allows remote attackers to conduct distinguishing attacks and plain-text recovery attacks via statistical analysis of timing data for crafted packets. This type of exploitation is known as the 'Lucky Thirteen' attack.
SolutionInstall the appropriate fix based on the vendor's advisory :
Alternatively, upgrade GSKit to 184.108.40.206 or 220.127.116.11 or later.