A vulnerability in libuv could lead to privilege escalation.
|Package||dev-libs/libuv on all architectures|
|Affected versions||< 1.4.2|
|Unaffected versions||>= 1.4.2|
libuv is a multi-platform support library with a focus on asynchronous I/O.
It was discovered that libuv does not call setgroups before calling setuid/setgid. If this is not called, then even though the uid has been dropped, there may still be groups associated that permit superuser privileges.
Context-dependent attackers could escalate privileges via unspecified vectors.
There is no known workaround at this time.
All libuv users should upgrade to the latest version:
# emerge --sync # emerge --ask --verbose --oneshot ">=dev-libs/libuv-1.4.2"
November 17, 2016
November 17, 2016: 1