Security restrictions bypass in Linux kernel



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2006-1524
CWE-ID CWE-264
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security restrictions bypass

EUVDB-ID: #VU95235

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 - Permissions, Privileges, and Access Controls

Exploit availability: No

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

CPE2.3 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.



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