#VU43041 Input validation error in Linux kernel - CVE-2011-1182

Vulnerability identifier: #VU43041

Vulnerability risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-1182

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.

kernel/signal.c in the Linux kernel before 2.6.39 allows local users to spoof the uid and pid of a signal sender via a sigqueueinfo system call.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.38.8

---

External links
https://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=da48524eb20662618854bb3df2db01fc65f3070c
https://rhn.redhat.com/errata/RHSA-2011-0927.html
https://www.openwall.com/lists/oss-security/2011/03/23/2
https://bugzilla.redhat.com/show_bug.cgi?id=690028
https://github.com/torvalds/linux/commit/da48524eb20662618854bb3df2db01fc65f3070c

---

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.