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Category:   Application (Directory)  >   OpenLDAP Vendors:
(Apple Issues Fix) OpenLDAP ber_get_next() Bug Lets Remote Users Deny Service
SecurityTracker Alert ID:  1020592
SecurityTracker URL:
CVE Reference:   CVE-2008-2952   (Links to External Site)
Date:  Aug 1 2008
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.3.39 (stable)
Description:   A vulnerability was reported in OpenLDAP. A remote user can cause denial of service conditions.

A remote user can send specially crafted data to trigger a flaw in the decoding of ASN.1 BER network datagrams and cause the target service to crash.

A specially crafted BerElement size value can trigger this flaw.

The vulnerability resides in the ber_get_next() function in 'libraries/liblber/io.c'.

Cameron Hotchkies reported this vulnerability.

Impact:   A remote user can cause the LDAP service to crash.
Solution:   Apple has issued a fix (Security Update 2008-005), which can be downloaded and installed via Software Update preferences, or from Apple Downloads at:

The Apple advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Boundary error
Underlying OS:  UNIX (macOS/OS X)
Underlying OS Comments:  10.4.11, 10.5.4

Message History:   This archive entry is a follow-up to the message listed below.
Jul 1 2008 OpenLDAP ber_get_next() Bug Lets Remote Users Deny Service

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