1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200612-19 / pam_ldap |
| Release Date | December 20, 2006 |
| Latest Revision | December 20, 2006: 01 |
| Impact | low |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| sys-auth/pam_ldap | < 183 | >= 183 | All supported architectures |
Related bugreports: #153916
pam_ldap contains a vulnerability that may allow a remote user with a locked account to gain unauthorized system access.
pam_ldap is a Pluggable Authentication Module which allows authentication against LDAP directories.
Steve Rigler discovered that pam_ldap does not correctly handle "PasswordPolicyResponse" control responses from an LDAP directory. This causes the pam_authenticate() function to always succeed, even if the previous authentication failed.
A locked user may exploit this vulnerability to bypass the LDAP authentication mechanism, possibly gaining unauthorized access to the system.
There is no known workaround at this time.
All pam_ldap users should upgrade to the latest version:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=sys-auth/pam_ldap-183" |