23607 : Linux Kernel binfmt_elf.c Malformed elf Entry Address Local DoS
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Info

Last Modified

about 1 year ago

Percent Complete

90%

Disclosure

Feb 26, 2006

Discovery

Unknown

Dates

Exploit

Unknown

Solution

Unknown

Keywords

No Keywords

Description

The Linux kernel contains a flaw that may allow a local denial of service. The issue is triggered because the code in binfmt_elf.c fails to properly validate the entry address of ELF executables. With a crafted ELF binary, the kernel can be forced to enter an inifite loop, which will result in loss of availability for the platform. Note that the issue is only present on non-AMD x86_64 systems.

Classification

Location: Local Access Required
Attack Type: Denial of Service
Impact: Loss of Availability
Exploit: Exploit Unknown
Disclosure: OSVDB Verified

Solution

Upgrade to version 2.6.15.5 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

Products

Linux

Kernel

2.6.15.4

References

Security Tracker: 1015724
Bugtraq ID: 16925
Secunia Advisory ID: 19083 19108 19220 20237 20398 20671 21136 21745 21983
CVE ID: 2006-0741 (see also: NVD)
Related OSVDB ID: 23605 23606
ISS X-Force ID: 25001
FrSIRT Advisory: ADV-2006-0804
Vendor Specific News/Changelog Entry: http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.15.5
Vendor Specific Advisory URL: http://support.avaya.com/elmodocs2/security/ASA-2006-161.htm
http://support.avaya.com/elmodocs2/security/ASA-2006-180.htm
http://www.novell.com/linux/security/advisories/2006-05-31.html
http://www.ubuntu.com/usn/usn-263-1
Other Advisory URL: http://www.us.debian.org/security/2006/dsa-1097
RedHat RHSA: RHSA-2006:0437 RHSA-2006:0493

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