LDAP TLS information disclosure
| ldap-tls-information-disclosure (21245) |  Medium Risk |
Description:
The LDAP (Lightweight Directory Access Protocol) Server could disclose sensitive information caused by a vulnerability when restarting TLS. pam_ldap and nss_ldap fail to restart TLS when using referred connections which could send credentials in plaintext when pam_ldap and nss_ldap are attempting to rebind. A remote attacker could exploit this vulnerability to obtain sensitive information.
*CVSS:
| Base Score: | 3.5 |
| Access Vector: | Remote |
| Access Complexity: | Low |
| Authentication: | Not Required |
| Confidentiality Impact: | Partial |
| Integrity Impact: | None |
| Availability Impact: | None |
| Temporal Score: | 2.6 |
| Exploitability: | Unproven |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Obtain Information
Remedy:
For Gentoo Linux:
Upgrade to the latest version of pam_ldap (178-r1 or later), as listed in Gentoo Linus Security Announcement GLSA 200507-13. See References.
For Red Hat Linux:
Refer to RHSA-2005:767-8 or RHSA-2005:751-23 for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux:
Refer to USN-152-1 for patch, upgrade or suggested workaround information. See References
For other distributions:
Contact your vendor for upgrade or patch information.
References:
- BugTraq Mailing List, Mon Jul 04 2005 - 14:06:15 CDT: pam_ldap/nss_ldap password leak in a master+slave+start_tls LDAP setup.
- Full-disclosure Mailing List, Thu Jul 21 2005 - 09:12:21 CDT: PAM/NSS LDAP vulnerabilitiy.
- Internet FAQ Archives Web site: RFC 1777 (rfc1777) - Lightweight Directory Access Protocol.
- ASA-2006-157: openldap and nss_ldap security update
- BID-14125: OpenLDAP TLS Plaintext Password Vulnerability
- BID-14126: PADL Software PAM_LDAP TLS Plaintext Password Vulnerability
- CVE-2005-2069: pam_ldap and nss_ldap, when used with OpenLDAP and connecting to a slave using TLS, does not use TLS for the subsequent connection if the client is referred to a master, which may cause a password to be sent in cleartext and allows remote attackers to sniff the password.
- DSA-785: libpam-ldap -- authentication bypass
- GLSA-200507-13: pam_ldap and nss_ldap: Plain text authentication leak
- MDKSA-2005:121: Updated nss_ldap/pam_ldap packages fix vulnerabilities
- RHSA-2005-751: openldap and nss_ldap security update
- RHSA-2005-767: openldap and nss_ldap security update
- SA21520: Avaya Products Multiple Vulnerabilities
- SUSE-SR:2005:020: SUSE Security Summary Report
Platforms Affected:
- Canonical Ubuntu 4.10
- Canonical Ubuntu 5.04
- Debian Debian Linux 3.1
- Gentoo Linux
- IETF LDAP
- MandrakeSoft Mandrake Linux 10.0 AMD64
- MandrakeSoft Mandrake Linux 10.0
- MandrakeSoft Mandrake Linux 10.1
- MandrakeSoft Mandrake Linux 10.1 X86_64
- MandrakeSoft Mandrake Linux LE2005 X86_64
- MandrakeSoft Mandrake Linux LE2005
- MandrakeSoft Mandrake Linux Corporate Server 2.1 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 2.1
- MandrakeSoft Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft Mandrake Linux Corporate Server 3.0
- MandrakeSoft Mandrake Multi Network Firewall 2.0
- RedHat Enterprise Linux 2.1 WS
- RedHat Enterprise Linux 2.1 ES
- RedHat Enterprise Linux 2.1 AS
- RedHat Enterprise Linux 3 AS
- RedHat Enterprise Linux 3 WS
- RedHat Enterprise Linux 3 ES
- RedHat Enterprise Linux 3 Desktop
- RedHat Enterprise Linux 4 WS
- RedHat Enterprise Linux 4 ES
- RedHat Enterprise Linux 4 AS
- RedHat Enterprise Linux 4 Desktop
- RedHat Linux Advanced Workstation 2.1 Itanium
- Turbolinux Turbolinux 10 Desktop
- Turbolinux Turbolinux 10 F...
- Turbolinux Turbolinux 10 Server
- Turbolinux Turbolinux 7 Server
- Turbolinux Turbolinux 7 Workstation
- Turbolinux Turbolinux 8 Server
- Turbolinux Turbolinux 8 Workstation
- Turbolinux Turbolinux Home
- Turbolinux Turbolinux Multimedia
- Turbolinux Turbolinux Personal
- Turbolinux Turbolinux Appliance Server 1.0 Hosting Ed
- Turbolinux Turbolinux Appliance Server 1.0 Workgroup Ed
Reported:
Jul 04, 2005
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.