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TITLE:
OpenLDAP Two Security Bypass Vulnerabilities

SECUNIA ADVISORY ID:
SA43331

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

RELEASE DATE:
2011-02-17

DISCUSS ADVISORY:
https://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)

https://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

https://secunia.com/vulnerability_scanning/personal/
https://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:
https://www.openldap.org/its/index.cgi/Software%20Bugs?id=6607
https://www.openldap.org/its/index.cgi/Software%20Bugs?id=6661

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

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

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

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

EXPLOIT:
Further details available in Customer Area:
https://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.

Subscribe:
https://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
https://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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