Security
Security
A flaw in the chfn and chsh utilities might allow modification of account properties by unauthorized users.
| Package | sys-apps/shadow on all architectures |
|---|---|
| Affected versions | < 4.0.5-r1 |
| Unaffected versions | >= 4.0.5-r1 |
shadow provides a set of utilities to deal with user accounts.
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.
All shadow users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-apps/shadow-4.0.5-r1"
Release date
November 04, 2004
Latest revision
November 05, 2004: 02
Severity
low
Exploitable
local
Bugzilla entries