#VU95765 Incorrect comparison in Linux kernel - CVE-2005-2801

Vulnerability identifier: #VU95765

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2005-2801

CWE-ID: CWE-697

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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