Linux Kernel up to 3.3.5 IPv6 net/ipv6/reassembly.c information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.7$0-$5k0.00

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 3.3.5 (Operating System). Affected by this issue is an unknown code of the file net/ipv6/reassembly.c of the component IPv6 Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality, and integrity. CVE summarizes:

The ip6_frag_queue function in net/ipv6/reassembly.c in the Linux kernel before 2.6.36 allows remote attackers to bypass intended network restrictions via overlapping IPv6 fragments.

The bug was discovered 12/10/2012. The weakness was published 12/10/2012 by Zhang Zuotao as 56891 as confirmed advisory (Website). The advisory is available at securityfocus.com. The public release has been coordinated with the vendor. This vulnerability is handled as CVE-2012-4444 since 08/21/2012. The attack may be launched remotely. A simple authentication is needed for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 83586 (SUSE SLED10 / SLES10 Security Update : kernel (SUSE-SU-2013:0856-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 166783 (SUSE Enterprise Linux Security Update for Linux Kernel (SUSE-SU-2014:0287-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (80608) and Tenable (83586). Similar entries are available at 5386, 5571, 5582 and 5656.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 4.7

VulDB Base Score: 5.4
VulDB Temp Score: 4.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 83586
Nessus Name: SUSE SLED10 / SLES10 Security Update : kernel (SUSE-SU-2013:0856-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 881552
OpenVAS Name: CentOS Update for kernel CESA-2012:1580 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
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Patch: git.kernel.org

Timelineinfo

08/21/2012 🔍
12/10/2012 +111 days 🔍
12/10/2012 +0 days 🔍
12/10/2012 +0 days 🔍
12/12/2012 +2 days 🔍
12/13/2012 +1 days 🔍
12/14/2012 +1 days 🔍
12/19/2012 +5 days 🔍
12/21/2012 +2 days 🔍
01/24/2013 +34 days 🔍
05/20/2015 +846 days 🔍
04/20/2021 +2162 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 56891⛔
Researcher: Zhang Zuotao
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-4444 (🔍)
OVAL: 🔍

X-Force: 80608 - Linux Kernel ipv6 security bypass, Medium Risk
SecurityTracker: 1028031 - Linux Kernel IPv6 Fragmentation Bug Lets Remote Users Bypass Security Restrictions
Vulnerability Center: 37646 - Linux Kernel Remote Security Bypass Vulnerability due to Improper Handling of IPv6 Packets, Medium
SecurityFocus: 56891 - Linux Kernel IPv6 CVE-2012-4444 Remote Security Bypass Vulnerability
Secunia: 51613 - Red Hat update for kernel, Not Critical
OSVDB: 88364

See also: 🔍

Entryinfo

Created: 12/14/2012 18:35
Updated: 04/20/2021 10:44
Changes: 12/14/2012 18:35 (90), 04/22/2017 17:05 (6), 04/20/2021 10:44 (3)
Complete: 🔍
Committer: olku

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