Joined: 12 May 2004
|Posted: Sun Nov 25, 2007 10:26 pm Post subject: [ GLSA 200711-33 ] nss_ldap: Information disclosure
|Gentoo Linux Security Advisory
Title: nss_ldap: Information disclosure (GLSA 200711-33)
Date: November 25, 2007
A race condition might lead to theft of user credentials or information disclosure in services using nss_ldap.
nss_ldap is a Name Service Switch module which allows 'passwd', 'group' and 'host' database information to be pulled from LDAP.
Vulnerable: < 258
Unaffected: >= 258
Architectures: All supported architectures
Josh Burley reported that nss_ldap does not properly handle the LDAP connections due to a race condition that can be triggered by multi-threaded applications using nss_ldap, which might lead to requested data being returned to a wrong process.
Remote attackers could exploit this race condition by sending queries to a vulnerable server using nss_ldap, possibly leading to theft of user credentials or information disclosure (e.g. Dovecot returning wrong mailbox contents).
There is no known workaround at this time.
All nss_ldap users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-auth/nss_ldap-258"