Information disclosure in Linux kernel



| Updated: 2020-08-11
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2012-4530
CWE-ID CWE-200
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Linux kernel
Operating systems & Components / Operating system

Vendor Linux Foundation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU43085

Risk: Low

CVSSv4.0: 2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2012-4530

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

The load_script function in fs/binfmt_script.c in the Linux kernel before 3.7.2 does not properly handle recursion, which allows local users to obtain sensitive information from kernel stack memory via a crafted application.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: 3.0 - 3.7

CPE2.3 External links

https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b66c5984017533316fd1951770302649baf1aa33
https://lists.opensuse.org/opensuse-security-announce/2013-04/msg00018.html
https://rhn.redhat.com/errata/RHSA-2013-0223.html
https://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.7.2
https://www.openwall.com/lists/oss-security/2012/10/19/3
https://bugzilla.redhat.com/show_bug.cgi?id=868285
https://github.com/torvalds/linux/commit/b66c5984017533316fd1951770302649baf1aa33


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



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