Linux Kernel 3.12 IHL IP Header flow_dissector.c skb_flow_dissect resource management

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability has been found in Linux Kernel 3.12 (Operating System) and classified as critical. Affected by this vulnerability is the function skb_flow_dissect of the file net/core/flow_dissector.c of the component IHL IP Header Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability.

The weakness was presented 10/31/2013 as [PATCH net] net: flow_dissector: fail on evil iph->ihl as not defined posting (Maillist). It is possible to read the advisory at This vulnerability is known as CVE-2013-4348 since 06/12/2013. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 70751 (Fedora 19 : kernel-3.11.6-201.fc19 (2013-20547)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350492 (Amazon Linux Security Advisory for kernel: ALAS-2013-252).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at A possible mitigation has been published 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 63536), Secunia (SA55552), Vulnerability Center (SBV-42200) and Tenable (70751). See 10998 for similar entry.





CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
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Class: Denial of service
CWE: CWE-399
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 70751
Nessus Name: Fedora 19 : kernel-3.11.6-201.fc19 (2013-20547)
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OpenVAS ID: 867043
OpenVAS Name: Fedora Update for kernel FEDORA-2013-20547
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Threat Intelligenceinfoedit

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Recommended: Patch
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06/12/2013 🔍
10/31/2013 +141 days 🔍
11/01/2013 +1 days 🔍
11/01/2013 +0 days 🔍
11/04/2013 +3 days 🔍
11/04/2013 +0 days 🔍
11/05/2013 +1 days 🔍
11/06/2013 +1 days 🔍
11/06/2013 +0 days 🔍
04/10/2017 +1251 days 🔍
05/15/2017 +35 days 🔍



Advisory: [PATCH net] net: flow_dissector: fail on evil iph->ihl
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-4348 (🔍)

SecurityFocus: 63536
Secunia: 55552 - Red Hat update for kernel-rt, Less Critical
Vulnerability Center: 42200 - Linux Kernel Before 3.12 Remote DoS Vulnerability in \x27skb_flow_dissect()\x27, High
OSVDB: 99273

See also: 🔍


Created: 11/06/2013 11:02 AM
Updated: 05/15/2017 08:05 AM
Changes: (2) source_oval_id source_secunia_date
Complete: 🔍


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