Linux Kernel 3.9 net/l2tp/l2tp_ip6.c l2tp_ip6_recvmsg information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel 3.9. This vulnerability affects the function l2tp_ip6_recvmsg of the file net/l2tp/l2tp_ip6.c. The manipulation leads to information disclosure. This vulnerability is referenced as CVE-2013-3230. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel 3.9 (Operating System). It has been rated as problematic. This issue affects the function l2tp_ip6_recvmsg of the file net/l2tp/l2tp_ip6.c. 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. The summary by CVE is:

The l2tp_ip6_recvmsg function in net/l2tp/l2tp_ip6.c in the Linux kernel before 3.9-rc7 does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel stack memory via a crafted recvmsg or recvfrom system call.

The weakness was published 04/07/2013 by Mathias Krause as not defined mailinglist post (Maillist). It is possible to read the advisory at lkml.org. The identification of this vulnerability is CVE-2013-3230 since 04/21/2013. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 66248 (Fedora 18 : kernel-3.8.8-203.fc18 (2013-6537)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks.

Upgrading to version 3.9-rc7 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (83692), Tenable (66248), SecurityFocus (BID 59387†), OSVDB (92665†) and Secunia (SA53647†). Similar entries are available at VDB-8485, VDB-8484, VDB-8486 and VDB-8487. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 66248
Nessus Name: Fedora 18 : kernel-3.8.8-203.fc18 (2013-6537)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 865961
OpenVAS Name: Fedora Update for kernel FEDORA-2013-10695
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Kernel 3.9-rc7
Patch: git.kernel.org

Timelineinfo

04/07/2013 🔍
04/07/2013 +0 days 🔍
04/07/2013 +0 days 🔍
04/14/2013 +7 days 🔍
04/21/2013 +7 days 🔍
04/22/2013 +1 days 🔍
04/24/2013 +2 days 🔍
05/27/2013 +33 days 🔍
05/31/2013 +4 days 🔍
05/10/2021 +2901 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: lkml.org
Researcher: Mathias Krause
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-3230 (🔍)
GCVE (CVE): GCVE-0-2013-3230
GCVE (VulDB): GCVE-100-8495

OVAL: 🔍

X-Force: 83692
SecurityFocus: 59387 - Linux Kernel CVE-2013-3230 Local Information Disclosure Vulnerability
Secunia: 53647 - Ubuntu update for kernel, Moderately Critical
OSVDB: 92665
Vulnerability Center: 39724 - Linux Kernel Before 3.9-rc7 \x27l2tp_ip6_recvmsg\x27 Function Allows Local Information Disclosure Vulnerability, Low

See also: 🔍

Entryinfo

Created: 04/24/2013 11:45
Updated: 05/10/2021 08:47
Changes: 04/24/2013 11:45 (78), 04/30/2017 12:49 (5), 05/10/2021 08:47 (3)
Complete: 🔍
Committer: olku
Cache ID: 216:5DF:103

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