GLSA-200901-10 : GnuTLS: Certificate validation error
Medium Nessus Plugin ID 35379
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200901-10 (GnuTLS: Certificate validation error)
Martin von Gagern reported that the _gnutls_x509_verify_certificate() function in lib/x509/verify.c trusts certificate chains in which the last certificate is an arbitrary trusted, self-signed certificate.
A remote attacker could exploit this vulnerability and spoof arbitrary names to conduct Man-In-The-Middle attacks and intercept sensitive information.
There is no known workaround at this time.
SolutionAll GnuTLS users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-libs/gnutls-2.4.1-r2'