Permissions, privileges, and access controls in Linux kernel core

1) Permissions, privileges, and access controls

EUVDB-ID: #VU92677

Risk: Low

CVSSv4.0: 1.9 [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:P/U:Clear]

CVE-ID: CVE-2009-0676

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

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

The vulnerability exists due to security restrictions bypass error within the sock_getsockopt() function in net/core/sock.c. A local user can gain access to sensitive information.

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://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=df0bca049d01c0ee94afb7cd5dfd959541e6c8da
https://lists.opensuse.org/opensuse-security-announce/2009-04/msg00007.html
https://lists.opensuse.org/opensuse-security-announce/2009-06/msg00000.html
https://lists.opensuse.org/opensuse-security-announce/2009-06/msg00001.html
https://lkml.org/lkml/2009/2/12/123
https://marc.info/?l=linux-kernel&m=123540732700371&w=2
https://openwall.com/lists/oss-security/2009/02/20/1
https://patchwork.kernel.org/patch/6816/
https://rhn.redhat.com/errata/RHSA-2009-0459.html
https://secunia.com/advisories/33758
https://secunia.com/advisories/34394
https://secunia.com/advisories/34502
https://secunia.com/advisories/34680
https://secunia.com/advisories/34786
https://secunia.com/advisories/34962
https://secunia.com/advisories/34981
https://secunia.com/advisories/35011
https://secunia.com/advisories/35390
https://secunia.com/advisories/35394
https://secunia.com/advisories/37471
https://www.debian.org/security/2009/dsa-1749
https://www.debian.org/security/2009/dsa-1787
https://www.debian.org/security/2009/dsa-1794
https://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28.6
https://www.mandriva.com/security/advisories?name=MDVSA-2009:071
https://www.openwall.com/lists/oss-security/2009/02/24/1
https://www.openwall.com/lists/oss-security/2009/03/02/6
https://www.redhat.com/support/errata/RHSA-2009-0326.html
https://www.redhat.com/support/errata/RHSA-2009-0360.html
https://www.securityfocus.com/archive/1/507985/100/0/threaded
https://www.securityfocus.com/bid/33846
https://www.ubuntu.com/usn/usn-751-1
https://www.vmware.com/security/advisories/VMSA-2009-0016.html
https://www.vupen.com/english/advisories/2009/3316
https://bugzilla.redhat.com/show_bug.cgi?id=486305
https://exchange.xforce.ibmcloud.com/vulnerabilities/48847
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11653
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8618

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. However, proof of concept for this vulnerability is available.