GLSA-200710-01 : RPCSEC_GSS library: Buffer overflow
Critical Nessus Plugin ID 26941
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200710-01 (RPCSEC_GSS library: Buffer overflow)
A stack based buffer overflow has been discovered in the svcauth_gss_validate() function in file lib/rpc/svc_auth_gss.c when processing an overly long string in a RPC message.
A remote attacker could send a specially crafted RPC request to an application relying on this library, e.g NFSv4 or Kerberos (GLSA-200709-01), resulting in the execution of arbitrary code with the privileges of the user running the application.
There is no known workaround at this time.
SolutionAll librpcsecgss users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-libs/librpcsecgss-0.16'