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TITLE:
OpenLDAP Two Security Bypass Vulnerabilities

SECUNIA ADVISORY ID:
SA43331

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/43331/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=43331

RELEASE DATE:
2011-02-17

DISCUSS ADVISORY:
http://secunia.com/advisories/43331/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/43331/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=43331

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
Two vulnerabilities have been reported in OpenLDAP, which can be
exploited by malicious people to bypass certain security
restrictions.

1) An error in the "back-ldap" component when a slave server forwards
password failures to a master server can be exploited to successfully
authenticate with an invalid password.

Successful exploitation of this vulnerability requires a master and
slave configuration with the "ppolicy_forward_updates" option.

2) An error in the "back-ndb" component when handling authentication
for a "rootdn" Distinguished Name (DN) can be exploited to perform
arbitrary actions (e.g. searching or updating) without a valid
password.

Successful exploitation of this vulnerability requires knowing the
"rootdn" value as configured in the slapd.conf file.

The vulnerabilities are reported in versions prior to 2.4.24.

SOLUTION:
Update to version 2.4.24.

PROVIDED AND/OR DISCOVERED BY:
Reported by:
1) Chris Jacobs to the mailing list.
2) George Tzanetis in a bug report.

ORIGINAL ADVISORY:
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6607
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=6661

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/products/corporate/EVM/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

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