|
Linux Kernel "vmi_write_ldt_entry()" Privilege Escalation
|
|
Secunia Advisory:
|
SA32124
|
|
|
Release Date:
|
2008-10-03
|
|
Last Update:
|
2008-10-09
|
|
Popularity:
|
2,916 views
|
|
|
Critical:
|
Less critical
|
|
Impact:
|
Privilege escalation
DoS
|
|
Where:
|
Local system
|
|
Solution Status:
|
Vendor Workaround
|
|
| OS: | Linux Kernel 2.6.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2008-4410
|
|
Description:
Eugene Teo has reported a vulnerability in the Linux Kernel, which can be exploited by malicious, local users in a VMI guest to cause a DoS (Denial of Service) and potentially gain escalated privileges.
The vulnerability is caused due to an error within the "vmi_write_ldt_entry()" function in arch/x86/kernel/vmi_32.c. This can be exploited to write values into the IDT by e.g. calling "sys_modify_ldt()".
Successful exploitation requires that the kernel is running as VMI guest on a x86 system.
Solution:
Fixed in the GIT repository.
http://git.kernel.org/?p=linux/kernel...9985e3a623d4d5d6207f1777398ca0606ab1c
Provided and/or discovered by:
Eugene Teo, Red Hat
Changelog:
2008-10-09: Added CVE reference.
Original Advisory:
http://git.kernel.org/?p=linux/kernel...9985e3a623d4d5d6207f1777398ca0606ab1c
|
|
|
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.
|
