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To improve our services to our customers, we have made a number of
additions to the Secunia Advisories and have started translating the
advisories to German.

The improvements will help our customers to get a better
understanding of how we reached our conclusions, how it was rated,
our thoughts on exploitation, attack vectors, and scenarios.

This includes:
* Reason for rating
* Extended description
* Extended solution
* Exploit code or links to exploit code
* Deep links

Read the full description:
http://corporate.secunia.com/products/48/?r=l

Contact Secunia Sales for more information:
http://corporate.secunia.com/how_to_buy/15/?r=l

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TITLE:
mod_auth_kerb "der_get_oid()" Off-By-One Vulnerability

SECUNIA ADVISORY ID:
SA23023

VERIFY ADVISORY:
http://secunia.com/advisories/23023/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
mod_auth_kerb 5.x (module for Apache)
http://secunia.com/product/12684/

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:
Restrict access to trusted people only.

PROVIDED AND/OR DISCOVERED BY:
Reported in a Red Hat bug.

ORIGINAL ADVISORY:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=216482
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=206736

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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