Vulnerability identifier: #VU42352

Vulnerability risk: Low

CVSSv3.1: 6.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-4588

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

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

Vendor: Linux Foundation

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

Multiple stack-based buffer overflows in net/netfilter/ipvs/ip_vs_ctl.c in the Linux kernel before 2.6.33, when CONFIG_IP_VS is used, allow local users to gain privileges by leveraging the CAP_NET_ADMIN capability for (1) a getsockopt system call, related to the do_ip_vs_get_ctl function, or (2) a setsockopt system call, related to the do_ip_vs_set_ctl function.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.32.58

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External links
http://ftp.linux.org.uk/pub/linux/linux-2.6/ChangeLog-2.6.33
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=04bcef2a83f40c6db24222b27a52892cba39dffb
http://www.openwall.com/lists/oss-security/2013/11/15/12
http://www.securityfocus.com/bid/63744
http://www.ubuntu.com/usn/USN-2064-1
http://www.ubuntu.com/usn/USN-2065-1
http://bugzilla.redhat.com/show_bug.cgi?id=1030800
http://github.com/torvalds/linux/commit/04bcef2a83f40c6db24222b27a52892cba39dffb

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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.