Linux Kernel up to 3.5.4 net/netlink/af_netlink.c netlink_sendmsg access control

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 3.5.4. This issue affects the function netlink_sendmsg of the file net/netlink/af_netlink.c. This manipulation causes access control. This vulnerability is handled as CVE-2012-6689. It is possible to launch the attack on the local host. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 3.5.4 (Operating System). It has been declared as critical. Affected by this vulnerability is the function netlink_sendmsg of the file net/netlink/af_netlink.c. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The netlink_sendmsg function in net/netlink/af_netlink.c in the Linux kernel before 3.5.5 does not validate the dst_pid field, which allows local users to have an unspecified impact by spoofing Netlink messages.

The weakness was released 05/02/2016 by Florian Weimer (Website). It is possible to read the advisory at github.com. This vulnerability is known as CVE-2012-6689 since 02/27/2015. Attacking locally is a requirement. Required for exploitation is a single authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 84252 (Debian DLA-246-2 : linux-2.6 regression update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l.

Upgrading to version 3.5.5 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (84252) and SecurityFocus (BID 72739†). Entries connected to this vulnerability are available at VDB-69190, VDB-69206, VDB-69207 and VDB-74021. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: 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: 84252
Nessus Name: Debian DLA-246-2 : linux-2.6 regression update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 3.5.5
Patch: git.kernel.org

Timelineinfo

08/16/2012 🔍
02/27/2015 +925 days 🔍
06/17/2015 +110 days 🔍
06/18/2015 +1 days 🔍
05/02/2016 +319 days 🔍
05/02/2016 +0 days 🔍
05/03/2016 +1 days 🔍
07/27/2022 +2276 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 20e1db19db5d6b9e4e83021595eab0dc8f107bef
Researcher: Florian Weimer
Status: Not defined
Confirmation: 🔍

CVE: CVE-2012-6689 (🔍)
GCVE (CVE): GCVE-0-2012-6689
GCVE (VulDB): GCVE-100-83131
SecurityFocus: 72739 - libmnl 'mnl_nlmsg_portid_ok()' Function Local Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 05/03/2016 11:23
Updated: 07/27/2022 17:05
Changes: 05/03/2016 11:23 (60), 11/07/2018 16:30 (15), 07/27/2022 17:05 (5)
Complete: 🔍
Cache ID: 216:44A:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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