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OpenLDAP ASN.1 BER Decoding Denial of Service
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Secunia Advisory:
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SA30853
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Release Date:
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2008-07-01
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Last Update:
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2008-08-15
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Popularity:
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3,078 views
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| Software: | OpenLDAP 2.3.x
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Binary Analysis:
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BA508 :: Available for 1 Credit 
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| CVE reference: | CVE-2008-2952
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Description:
A vulnerability has been reported in OpenLDAP, which can be exploited by malicious people to cause a DoS (Denial of Service).
The vulnerability is caused due to an error within the "ber_get_next()" function in libraries/liblber/io.c. This can be exploited to trigger an "assert()" and terminate the "slapd" process via a specially crafted ASN.1 BER encoded packet.
The vulnerability is reported in version 2.3.41. Other versions may also be affected.
Solution:
Update to version 2.3.43.
Provided and/or discovered by:
Oscar Mira-Sanchez, reported via ZDI
Changelog:
2008-07-03: Added CVE reference.
2008-07-17: Updated "Solution" section.
2008-08-15: Updated credits and the "Original Advisory" section.
Original Advisory:
OpenLDAP:
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=5580
ZDI:
http://www.zerodayinitiative.com/advisories/ZDI-08-052/
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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