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CVE-2011-1024

Publication date 19 March 2011

Last updated 24 July 2024


Ubuntu priority

chain.c in back-ldap in OpenLDAP 2.4.x before 2.4.24, when a master-slave configuration with a chain overlay and ppolicy_forward_updates (aka authentication-failure forwarding) is used, allows remote authenticated users to bypass external-program authentication by sending an invalid password to a slave server.

Read the notes from the security team

Status

Package Ubuntu Release Status
openldap 10.10 maverick
Fixed 2.4.23-0ubuntu3.5
10.04 LTS lucid
Fixed 2.4.21-0ubuntu5.4
9.10 karmic
Fixed 2.4.18-0ubuntu1.2
8.04 LTS hardy Not in release
6.06 LTS dapper Not in release
openldap2.2 10.10 maverick Not in release
10.04 LTS lucid Not in release
9.10 karmic Not in release
8.04 LTS hardy Not in release
6.06 LTS dapper
Not affected
openldap2.3 10.10 maverick Not in release
10.04 LTS lucid Not in release
9.10 karmic Not in release
8.04 LTS hardy
Fixed 2.4.9-0ubuntu0.8.04.5
6.06 LTS dapper Not in release

Notes


jdstrand

openldap 2.2 does not use callbacks for checking if back-ldap returned any results

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
openldap

References

Related Ubuntu Security Notices (USN)

    • USN-1100-1
    • OpenLDAP vulnerabilities
    • 31 March 2011

Other references