|
Linux Kernel "vmsplice()" System Call Vulnerabilities
|
|
Secunia Advisory:
|
SA28835
|
|
|
Release Date:
|
2008-02-11
|
|
Popularity:
|
16,074 views
|
|
|
Critical:
|
Less critical
|
|
Impact:
|
Exposure of sensitive information
Privilege escalation
DoS
|
|
Where:
|
Local system
|
|
Solution Status:
|
Vendor Patch
|
|
| OS: | Linux Kernel 2.6.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2008-0009
CVE-2008-0010
CVE-2008-0600
|
|
Description:
Some vulnerabilities have been reported in the Linux Kernel, which can be exploited by malicious, local users to cause a DoS (Denial of Service), disclose potentially sensitive information, and gain escalated privileges.
The vulnerabilities are caused due to the missing verification of parameters within the "vmsplice_to_user()", "copy_from_user_mmap_sem()", and "get_iovec_page_array()" functions in fs/splice.c before using them to perform certain memory operations. This can be exploited to e.g. read or write to arbitrary kernel memory via a specially crafted "vmsplice()" system call.
Successful exploitation allows attackers to e.g. gain "root" privileges.
Note: The affected system call first appeared in version 2.6.17.
Solution:
Update to version 2.6.23.16 or 2.6.24.2.
Provided and/or discovered by:
Wojciech Purczynskiof iSEC Security Research and qaaz
Original Advisory:
iSEC Security Research:
http://www.isec.pl/vulnerabilities/isec-0026-vmsplice_to_kernel.txt
qaaz:
http://milw0rm.com/exploits/5092
http://milw0rm.com/exploits/5093
|
|
|
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.
|
