FreeBSD 7.4/8.3/9.0/9.1 Linux Compatibility Layer System Call input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability has been found in FreeBSD 7.4/8.3/9.0/9.1 (Operating System) and classified as critical. This vulnerability affects the function System Call of the component Linux Compatibility Layer. The manipulation with an unknown input leads to a remote code execution vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was shared 11/22/2012 by Mateusz Guzik as 56654 as confirmed changelog entry (Bugtraq). The advisory is shared for download at securityfocus.com. The vendor cooperated in the coordination of the public release. This vulnerability was named CVE-2012-4576 since 08/21/2012. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 63049 (FreeBSD : FreeBSD -- Linux compatibility layer input validation error (5536c8e4-36b3-11e2-a633-902b343deec9)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (80321) and Tenable (63049). Additional details are provided at seclists.org. The entry 146501 is related to this item.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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NVD Base Score: 7.8
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CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 63049
Nessus Name: FreeBSD : FreeBSD -- Linux compatibility layer input validation error (5536c8e4-36b3-11e2-a633-902b343deec9)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 72595
OpenVAS Name: FreeBSD Ports: FreeBSD
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Timelineinfo

08/21/2012 🔍
11/22/2012 +93 days 🔍
11/22/2012 +0 days 🔍
11/22/2012 +0 days 🔍
11/22/2012 +0 days 🔍
11/23/2012 +1 days 🔍
11/24/2012 +1 days 🔍
11/26/2012 +2 days 🔍
11/27/2012 +1 days 🔍
12/10/2012 +13 days 🔍
04/19/2021 +3052 days 🔍

Sourcesinfo

Product: freebsd.org

Advisory: 56654⛔
Researcher: Mateusz Guzik
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-4576 (🔍)
X-Force: 80321
SecurityTracker: 1027809 - FreeBSD Input Validation Flaw in Linux Compatibility Layer Lets Local Users Gain Elevated Privileges
Vulnerability Center: 37589 - FreeBSD 7.4, 8.3, 9.0, and 9.1 Local Privilege Escalation Vulnerability, Medium
SecurityFocus: 56654 - FreeBSD Linux Compatibility Layer Local Privilege Escalation Vulnerabiity
OSVDB: 87836

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 11/27/2012 14:17
Updated: 04/19/2021 15:43
Changes: 11/27/2012 14:17 (71), 04/22/2017 12:59 (4), 04/19/2021 15:33 (2), 04/19/2021 15:39 (20), 04/19/2021 15:43 (1)
Complete: 🔍

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