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TITLE:
OpenLDAP "UTF8StringNormalize()" Off-by-One Denial of Service
Vulnerability

SECUNIA ADVISORY ID:
SA46599

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46599/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46599

RELEASE DATE:
2011-10-28

DISCUSS ADVISORY:
http://secunia.com/advisories/46599/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
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http://secunia.com/advisories/46599/

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https://ca.secunia.com/?page=viewadvisory&vuln_id=46599

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
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http://secunia.com/vulnerability_scanning/personal/
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DESCRIPTION:
A vulnerability has been reported in OpenLDAP, which can be exploited
by malicious users to cause a DoS (Denial of Service).

The vulnerability is caused due to an off-by-one error in the
"UTF8StringNormalize()" function when NULL terminating a string. This
can be exploited to crash the daemon via e.g. an empty
"postalAddressAttribute" value.

The vulnerability is reported in version 2.4.x. Other versions may
also be affected.

SOLUTION:
Fixed in the GIT repository.

PROVIDED AND/OR DISCOVERED BY:
Reported by Howard Chu to the OpenLDAP mailing list.

ORIGINAL ADVISORY:
http://www.openldap.org/its/index.cgi/Software%20Bugs?id=7059;selectid=7059

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
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