Improper locking in Linux kernel

1) Improper locking

EUVDB-ID: #VU93789

Risk: Low

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

CVE-ID: CVE-2005-0400

CWE-ID: CWE-667 - Improper Locking

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The ext2_make_empty function call in the Linux kernel before 2.6.11.6 does not properly initialize memory when creating a block for a new directory entry, which allows local users to obtain potentially sensitive information by reading the block.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://arkoon.net/advisories/ext2-make-empty-leak.txt
https://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.11.6
https://marc.info/?l=bugtraq&m=111238764720696&w=2
https://secunia.com/advisories/14713/
https://secunia.com/advisories/17002
https://secunia.com/advisories/18684
https://www.redhat.com/support/errata/RHSA-2005-366.html
https://www.redhat.com/support/errata/RHSA-2005-663.html
https://www.redhat.com/support/errata/RHSA-2006-0190.html
https://www.redhat.com/support/errata/RHSA-2006-0191.html
https://www.securityfocus.com/bid/12932
https://www.vupen.com/english/advisories/2005/1878
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=152532
https://exchange.xforce.ibmcloud.com/vulnerabilities/19866
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10336
https://usn.ubuntu.com/103-1/

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.