Linux Kernel up to 5.7 User Namespace ovl_path_open privileges assignment

CVSS Meta Temp Score
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CTI Interest Score
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3.6$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Linux Kernel up to 5.7. Affected by this vulnerability is the function ovl_path_open of the component User Namespace Handler. Performing a manipulation results in privileges assignment. This vulnerability is cataloged as CVE-2020-16120. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability was found in Linux Kernel up to 5.7 (Operating System). It has been classified as problematic. This affects the function ovl_path_open of the component User Namespace Handler. The manipulation with an unknown input leads to a privileges assignment vulnerability. CWE is classifying the issue as CWE-266. A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality.

The weakness was shared 02/11/2021. It is possible to read the advisory at launchpad.net. This vulnerability is uniquely identified as CVE-2020-16120. 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.

Upgrading to version 5.8 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 patching the affected component.

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Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
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: Privileges assignment
CWE: CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 5.8
Patch: git.kernel.org

Timelineinfo

07/29/2020 🔍
02/11/2021 +197 days 🔍
02/11/2021 +0 days 🔍
02/27/2021 +16 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: launchpad.net
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2020-16120 (🔍)
GCVE (CVE): GCVE-0-2020-16120
GCVE (VulDB): GCVE-100-169719

Entryinfo

Created: 02/11/2021 08:25
Updated: 02/27/2021 22:05
Changes: 02/11/2021 08:25 (42), 02/27/2021 22:00 (6), 02/27/2021 22:05 (19)
Complete: 🔍
Cache ID: 216::103

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