GLSA-201408-14 : stunnel: Information disclosure
Medium Nessus Plugin ID 77458
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-201408-14 (stunnel: Information disclosure)
stunnel does not properly update the state of the pseudo-random generator after fork-threading which causes subsequent children with the same process ID to use the same entropy pool. ECDSA and DSA keys, when not used in deterministic mode (RFC6979), rely on random data for its k parameter to not leak private key information.
A remote attacker may gain access to private key information from ECDSA or DSA keys.
There is no known workaround at this time.
SolutionAll stunnel users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-misc/stunnel-5.02'