Linux Kernel 3.8 file_ns_capable access control

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 3.8 and classified as critical. The affected element is the function file_ns_capable. The manipulation results in access control. This vulnerability is identified as CVE-2013-1959. Additionally, an exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel 3.8 (Operating System). Affected is the function file_ns_capable. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

kernel/user_namespace.c in the Linux kernel before 3.8.9 does not have appropriate capability requirements for the uid_map and gid_map files, which allows local users to gain privileges by opening a file within an unprivileged process and then modifying the file within a privileged process.

The weakness was released 04/14/2013 by Andy Lutomirski as not defined mailinglist post (oss-sec). The advisory is available at seclists.org. The public release was coordinated with the vendor. This vulnerability is traded as CVE-2013-1959 since 02/19/2013. The exploitability is told to be difficult. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 66303 (Ubuntu 13.04 : linux vulnerabilities (USN-1815-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks.

Upgrading to version 3.8.10 eliminates this vulnerability. The upgrade is hosted for download at git.kernel.org. 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 (83994), Exploit-DB (25307), Tenable (66303), SecurityFocus (BID 59537†) and OSVDB (92927†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.4

VulDB Base Score: 4.9
VulDB Temp Score: 4.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 66303
Nessus Name: Ubuntu 13.04 : linux vulnerabilities (USN-1815-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 841416
OpenVAS Name: Ubuntu Update for linux USN-1815-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 3.8.10
Patch: git.kernel.org

Timelineinfo

02/19/2013 🔍
04/14/2013 +54 days 🔍
04/14/2013 +0 days 🔍
04/28/2013 +14 days 🔍
04/29/2013 +1 days 🔍
04/30/2013 +1 days 🔍
05/03/2013 +3 days 🔍
05/03/2013 +0 days 🔍
05/06/2013 +3 days 🔍
06/15/2024 +4058 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: seclists.org
Researcher: Andy Lutomirski
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-1959 (🔍)
GCVE (CVE): GCVE-0-2013-1959
GCVE (VulDB): GCVE-100-8586

OVAL: 🔍

X-Force: 83994
SecurityFocus: 59537 - Linux Kernel CVE-2013-1959 Local Privilege Escalation Vulnerability
OSVDB: 92927
Vulnerability Center: 39386 - Linux Kernel 3.8.x and 3.9x '/proc/<pid>/uid_map\x27 Allows Local Privileges Escalation Vulnerability, High

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/06/2013 15:48
Updated: 06/15/2024 16:09
Changes: 05/06/2013 15:48 (81), 04/28/2017 10:05 (4), 05/10/2021 13:41 (3), 06/15/2024 16:09 (15)
Complete: 🔍
Committer:
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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