nss_ldap LDAP connection race condition
| nssldap-ldap-race-condition (38505) |  Medium Risk |
Description:
nss_ldap, when used in pthread and fork libraries after a call is placed, is vulnerable to a race condition caused by the improper handling of LDAP connections. A remote attacker could exploit this vulnerability using the LDAP connection to manipulate the data and return the incorrect user attributes to the wrong process.
Platforms Affected:
- Debian, Debian Linux 3.1
- Debian, Debian Linux 4.0
- Gentoo, Linux
- MandrakeSoft, Mandrake Linux 2007
- MandrakeSoft, Mandrake Linux 2007 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 4.0
- PADL, nss_ldap prior to 259
- RedHat, Enterprise Linux 4 WS
- RedHat, Enterprise Linux 4 ES
- RedHat, Enterprise Linux 4 AS
- RedHat, Enterprise Linux 4 Desktop
- RedHat, Enterprise Linux 5 Client
- RedHat, Enterprise Linux 5
Remedy:
Upgrade to the latest version of nss_ldap (259 or later), available from the PADL Software Pty Ltd Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
Consequences:
Data Manipulation
References:
- PADL Software Pty Ltd Web site, nss_ldap at http://www.padl.com/OSS/nss_ldap.html.
- Red Hat Bugzilla Bug 367461, CVE-2007-5794 nss_ldap randomly replying with wrong user's data at https://bugzilla.redhat.com/show_bug.cgi?id=367461.
- ASA-2008-332: nss_ldap security update (RHSA-2008-0715)
- BID-26452: PADL 'nss_ldap' Race Condition Security Vulnerability
- CVE-2007-5794: Race condition in nss_ldap, when used in applications that are linked against the pthread library and fork after a call to nss_ldap, might send user data to the wrong process because of improper handling of the LDAP connection. NOTE: this issue was originally reported for Dovecot with the wrong mailboxes being returned, but other applications might also be affected.
- DSA-1430: libnss-ldap -- denial of service
- GLSA-200711-33: nss_ldap: Information disclosure
- MDVSA-2008:049: Updated nss_ldap package fixes race condition allowing user data theft
- RHSA-2008-0389: Low: nss_ldap security and bug fix update
- RHSA-2008-0715: Low: nss_ldap security and bug fix update
- SA27670: nss_ldap Race Condition Security Issue
- SA31524: Avaya Products nss_ldap Race Condition Security Issue
- SUSE-SR:2008:003: SUSE Security Summary Report
Reported:
Nov 15, 2007
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