mod_auth_kerb "der_get_oid()" Off-By-One Vulnerability - Secunia Advisories - Vulnerability Intelligence

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mod_auth_kerb "der_get_oid()" Off-By-One Vulnerability
Secunia Advisory:	SA23023	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2006-11-21
Last Update:	2006-11-22
Popularity:	7,996 views

Critical:	Moderately critical
Impact:	DoS
Where:	From remote
Solution Status:	Vendor Workaround

Software:	mod_auth_kerb 5.x (module for Apache)

Subscribe:	Instant alerts on relevant vulnerabilities

CVE reference:	CVE-2006-5989

Description: A vulnerability has been reported in mod_auth_kerb module for Apache, which can be exploited by malicious people to cause a DoS (Denial of Service). The vulnerability is caused due to an off-by-one error within the "der_get_oid()" function in spnegokrb5/der_get.c. This can be exploited to cause a one-byte heap based buffer overflow by sending specially crafted Kerberos messages. Solution: Fixed in CVS. Provided and/or discovered by: Reported in a Red Hat bug. Changelog: 2006-11-22: Updated "Solution" section. Original Advisory: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=216482 https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=206736 http://modauthkerb.cvs.sourceforge.ne...okrb5/der_get.c?r1=1.1&r2=1.1.2.1

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