Incorrect comparison in Linux kernel

1) Incorrect comparison

EUVDB-ID: #VU95765

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2005-2801

CWE-ID: CWE-697 - Incorrect Comparison

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

xattr.c in the ext2 and ext3 file system code for Linux kernel 2.6 does not properly compare the name_index fields when sharing xattr blocks, which could prevent default ACLs from being applied.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

External links

http://acl.bestbits.at/pipermail/acl-devel/2005-February/001848.html
http://lists.debian.org/debian-kernel/2005/08/msg00238.html
http://www.novell.com/linux/security/advisories/2005_18_kernel.html
http://www.debian.org/security/2005/dsa-922
http://www.debian.org/security/2005/dsa-921
http://www.securityfocus.com/bid/14793
http://secunia.com/advisories/18056
http://secunia.com/advisories/18059
http://www.redhat.com/support/errata/RHSA-2006-0144.html
http://www.redhat.com/support/errata/RHSA-2005-514.html
http://secunia.com/advisories/19252
http://secunia.com/advisories/17073
http://secunia.com/advisories/17826
http://www.mandriva.com/security/advisories?name=MDKSA-2005:219
http://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10495
http://www.securityfocus.com/archive/1/427980/100/0/threaded

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.