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>> Linux Kernel "binfmt_elf" Core Dump Buffer Overflow Vulnerability

Title : Linux Kernel "binfmt_elf" Core Dump Buffer Overflow Vulnerability
VUPEN ID : VUPEN/ADV-2005-0524
CVE ID : CVE-2005-1263
CWE ID : CWE-
Rated as : Moderate Risk 
Remotely Exploitable : No
Locally Exploitable : Yes
Release Date : 2005-05-11


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  Receive VUPEN Security notifications by SMS 

A new vulnerability was identified in Linux Kernel, which may be exploited by malicious local attackers to obtain elevated privileges or cause a denial of service. This flaw is due to a stack overflow error in the "elf_core_dump()" function [fs/binfmt_elf.c] that does not properly handle a negative "len" value, which may be exploited by local unprivileged users to cause a DoS or execute arbitrary commands with "root" privileges.

Affected Products

Linux Kernel 2.6.11.8 and prior
Linux Kernel 2.6.12-rc4 and prior
Linux Kernel 2.4.30 and prior
Linux Kernel 2.4.31-pre1 and prior
Linux Kernel 2.2.26 and prior
Linux Kernel 2.2.27-rc2 and prior

Solution

Kernel version 2.6.11.9 :
http://www.kernel.org

References

http://www.vupen.com/english/advisories/2005/0524
http://www.isec.pl/vulnerabilities/isec-0023-coredump.txt
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.11.9

Credits

Vulnerabilities reported by Paul Starzetz

ChangeLog

2005-05-11 : Initial release
2005-05-11 : Updated Solution

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