Vulnerability identifier: #VU42851

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-2017

CWE-ID: CWE-399

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 perform a denial of service (DoS) attack.

The veth (aka virtual Ethernet) driver in the Linux kernel before 2.6.34 does not properly manage skbs during congestion, which allows remote attackers to cause a denial of service (system crash) by leveraging lack of skb consumption in conjunction with a double-free error.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 2.6.33 - 2.6.33.19

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External links
http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.34
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6ec82562ffc6f297d0de36d65776cff8e5704867
http://www.openwall.com/lists/oss-security/2013/04/29/10
http://bugzilla.redhat.com/show_bug.cgi?id=957705
http://github.com/torvalds/linux/commit/6ec82562ffc6f297d0de36d65776cff8e5704867
http://support.f5.com/csp/article/K39655464

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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.