#VU95235 Security restrictions bypass in Linux kernel - CVE-2006-1524


| Updated: 2017-07-20

Vulnerability identifier: #VU95235

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:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2006-1524

CWE-ID: CWE-264

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.

madvise_remove in Linux kernel 2.6.16 up to 2.6.16.6 does not follow file and mmap restrictions, which allows local users to bypass IPC permissions and replace portions of readonly tmpfs files with zeroes, aka the MADV_REMOVE vulnerability. NOTE: this description was originally written in a way that combined 2 separate issues. The mprotect issue now has a separate name, CVE-2006-2071.

Mitigation
Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

External links
https://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.16.6
https://lwn.net/Alerts/180820/
https://secunia.com/advisories/19657
https://secunia.com/advisories/19664
https://secunia.com/advisories/19735
https://secunia.com/advisories/20398
https://secunia.com/advisories/20671
https://secunia.com/advisories/20914
https://www.debian.org/security/2006/dsa-1097
https://www.debian.org/security/2006/dsa-1103
https://www.novell.com/linux/security/advisories/2006-05-31.html
https://www.osvdb.org/24714
https://www.securityfocus.com/bid/17587
https://www.vupen.com/english/advisories/2006/1391
https://www.vupen.com/english/advisories/2006/1475
https://www.vupen.com/english/advisories/2006/2554
https://exchange.xforce.ibmcloud.com/vulnerabilities/25870

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.


Latest bulletins with this vulnerability


Security restrictions bypass in Linux kernel