Use-after-free in Linux kernel

1) Use-after-free

EUVDB-ID: #VU43444

Risk: Medium

CVSSv4.0: 4.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2012-3510

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing a taskstats TASKSTATS_CMD_ATTR_PID command. A local users can obtain potentially sensitive information from kernel memory or cause a denial of service (system crash).

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Linux kernel: 2.6.10 - 2.6.18.7

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:2.6.10:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.11:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.11.1:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.11.2:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.11.3:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.11.4:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.11.5:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.11.6:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.11.7:*:*:*:*:*:*:*
• cpe:2.3:o:linux_foundation:linux_kernel:2.6.11.8:*:*:*:*:*:*:*

External links

https://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.19
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f0ec1aaf54caddd21c259aea8b2ecfbde4ee4fb9
https://rhn.redhat.com/errata/RHSA-2012-1323.html
https://secunia.com/advisories/50811
https://www.openwall.com/lists/oss-security/2012/08/20/12
https://www.securityfocus.com/bid/55144
https://www.securitytracker.com/id?1027602
https://bugzilla.redhat.com/show_bug.cgi?id=849722
https://github.com/torvalds/linux/commit/f0ec1aaf54caddd21c259aea8b2ecfbde4ee4fb9

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.