#VU99914 Security features in Linux kernel - CVE-2005-4351

Vulnerability identifier: #VU99914

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2005-4351

CWE-ID: CWE-254

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description

The vulnerability allows a local user to read and manipulate data.

The securelevels implementation in FreeBSD 7.0 and earlier, OpenBSD up to 3.8, DragonFly up to 1.2, and Linux up to 2.6.15 allows root users to bypass immutable settings for files by mounting another filesystem that masks the immutable files while the system is running.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

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External links
https://archives.neohapsis.com/archives/openbsd/2005-10/1523.html
https://lists.grok.org.uk/pipermail/full-disclosure/2006-January/041177.html
https://www.redteam-pentesting.de/advisories/rt-sa-2005-015.txt
https://www.redteam-pentesting.de/advisories/rt-sa-2005-15.txt
https://exchange.xforce.ibmcloud.com/vulnerabilities/24037

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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