Improper access control in Linux kernel

1) Improper access control

EUVDB-ID: #VU99899

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2006-1856

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

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

Certain modifications to the Linux kernel 2.6.16 and earlier do not add the appropriate Linux Security Modules (LSM) file_permission hooks to the (1) readv and (2) writev functions, which might allow attackers to bypass intended access restrictions.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

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

External links

https://lists.jammed.com/linux-security-module/2005/09/0019.html
https://secunia.com/advisories/20237
https://secunia.com/advisories/20716
https://secunia.com/advisories/21045
https://secunia.com/advisories/21745
https://secunia.com/advisories/22093
https://support.avaya.com/elmodocs2/security/ASA-2006-161.htm
https://www.debian.org/security/2006/dsa-1184
https://www.mandriva.com/security/advisories?name=MDKSA-2006:123
https://www.osvdb.org/25747
https://www.redhat.com/support/errata/RHSA-2006-0493.html
https://www.securityfocus.com/bid/18105
https://www.ubuntu.com/usn/usn-302-1
https://www.ussg.iu.edu/hypermail/linux/kernel/0604.3/0777.html
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=191524
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9927

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.