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OpenLDAP Denial of Service Vulnerabilities
Secunia Advisory: SA27424
Release Date: 2007-10-29
Last Update: 2008-02-08
Popularity: 9,749 views

Critical:
Less critical
Impact: DoS
Where: From remote
Solution Status: Vendor Patch

Software:OpenLDAP 2.3.x

Binary Analysis: BA288 :: Available for 1 Credit

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Some vulnerabilities have been reported in OpenLDAP, which can be exploited by malicious users to cause a DoS (Denial of Service).

1) A vulnerability is caused due to the "add_filter_attrs()" function in servers/slapd/overlay/pcache.c not correctly NULL terminating "new_attrs", which can be exploited to crash slapd due to an out of bounds memory access.

Successful exploitation may require that slapd runs as proxy-caching server.

2) An error within the normalisation of "objectClasses" can be exploited to crash a vulnerable server by sending a malformed "objectClasses" attribute.

The vulnerabilities are reported in versions prior to 2.3.39.

3) An error when performing modify operations with a NOOP control on entries stored in the BDB backend can be exploited to crash the slapd daemon.

The vulnerability is reported in versions prior to 2.3.36.

Note: Several other bugs, which may have a security impact, were also reported.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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