Linux Kernel up to 5.11.6 RPC Message drivers/misc/fastrpc.c fastrpc_internal_invoke privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$5k-$25k0.00

A vulnerability was found in Linux Kernel up to 5.11.6 (Operating System). It has been rated as critical. This issue affects the function fastrpc_internal_invoke of the file drivers/misc/fastrpc.c of the component RPC Message Handler. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. The impact remains unknown.

The weakness was released 03/15/2021. It is possible to read the advisory at lore.kernel.org. The identification of this vulnerability is CVE-2021-28375. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 04/01/2021). The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.5
VulDB Temp Score: 5.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
ATT&CK: T1068

Local: No
Remote: Partially

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: 🔍

Patch: git.kernel.org

Timelineinfo

03/15/2021 🔍
03/15/2021 +0 days 🔍
03/15/2021 +0 days 🔍
04/01/2021 +17 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: lore.kernel.org
Status: Not defined

CVE: CVE-2021-28375 (🔍)

Entryinfo

Created: 03/15/2021 14:23
Updated: 04/01/2021 11:41
Changes: 03/15/2021 14:23 (40), 04/01/2021 11:36 (2), 04/01/2021 11:41 (20)
Complete: 🔍

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