GLSA-200411-09 : shadow: Unauthorized modification of account information
Medium Nessus Plugin ID 15634
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe remote host is affected by the vulnerability described in GLSA-200411-09 (shadow: Unauthorized modification of account information)
Martin Schulze reported a flaw in the passwd_check() function in 'libmisc/pwdcheck.c' which is used by chfn and chsh.
A logged-in local user with an expired password may be able to use chfn and chsh to change his standard shell or GECOS information (full name, phone number...) without being required to change his password.
There is no known workaround at this time.
SolutionAll shadow users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=sys-apps/shadow-4.0.5-r1'