GLSA-201701-34 : runC: Privilege escalation
Medium Nessus Plugin ID 96475
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-201701-34 (runC: Privilege escalation)
A vulnerability was discovered in runC that allows additional container processes via ‘runc exec’ to be ptraced by the pid 1 of the container. This allows the main processes of the container, if running as root, to gain access to file-descriptors of these new processes.
An attacker, who is able to successfully escape the container or modify runC’s state before process initialization, could escalate privileges.
There is no known workaround at this time.
SolutionAll runC users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=app-emulation/runc-1.0.0_rc2-r2'