|
Linux Kernel VFAT IOCTLs and IPv6 Jumbogram Denial of Service
|
|
Secunia Advisory:
|
SA25505
|
|
|
Release Date:
|
2007-06-01
|
|
Last Update:
|
2008-02-04
|
|
Popularity:
|
7,077 views
|
|
|
Critical:
|
Moderately critical
|
|
Impact:
|
DoS
|
|
Where:
|
From remote
|
|
Solution Status:
|
Vendor Patch
|
|
| OS: | Linux Kernel 2.6.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2007-2878
CVE-2007-4567
CVE-2008-0352
|
|
Description:
A security issue and a vulnerability have been reported in the Linux Kernel, which can be exploited by malicious, local users and malicious people to cause a DoS (Denial of Service).
1) The security issue is caused due to an error within the handling of certain VFAT IOCTLs on 64bit systems, which can be exploited to crash the kernel by calling certain IOCTLs with malicious parameters.
Successful exploitation requires a 64bit-system and vfat and msdos file systems.
2) The vulnerability is caused due to a NULL pointer dereference within the hop-by-hop handlers when processing IPv6 "Jumbograms". This can be exploited to cause a DoS by sending specially crafted IPv6 packets to a vulnerable system.
Solution:
Update to version 2.6.21.2.
Provided and/or discovered by:
1) Bart Oldeman
2) Eric Sesterhenn and Victor Julien
Changelog:
2008-01-14: Updated advisory to include vulnerability #2. Increased criticality.
2008-02-04: Added CVE reference.
Original Advisory:
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.2
http://bugzilla.kernel.org/show_bug.cgi?id=8450
|
|
|
Track this Secunia Advisory
|
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.
Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.
|
|
|
About this Secunia Advisory
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
