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>> Linux Kernel "sys_prctl()" Local Privilege Escalation and Denial of Service Vulnerability

Title : Linux Kernel "sys_prctl()" Local Privilege Escalation and Denial of Service Vulnerability
VUPEN ID : VUPEN/ADV-2006-2699
CVE ID : CVE-2006-2451
Rated as : Moderate Risk 
Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2006-07-07


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format 

A vulnerability has been identified in Linux Kernel, which could be exploited by local attackers to obtain elevated privileges or cause a denial of service. This flaw is due to an error in the "sys_prctl()" [sys.c] function when dumping core files, which could be exploited by malicious users to consume all available disk space or execute arbitrary commands with "root" privileges.

Affected Products

Linux Kernel version 2.6.17.3 and prior
Linux Kernel version 2.6.16.23 and prior
Linux Kernel version 2.6.18-rc1 and prior

Solution

Upgrade to Linux Kernel version 2.6.17.4, 2.6.16.24, or 2.6.18-rc2 :
http://www.kernel.org/

References

http://www.vupen.com/english/advisories/2006/2699
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.17.4
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.24

Credits

Vulnerability reported by Red Hat

ChangeLog

2006-07-07 : Initial release
2006-07-15 : Updated Solution

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