Linux Kernel up to 5.14.6 cBPF arch/mips/net/bpf_jit.c code injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 5.14.6. It has been declared as critical. Impacted is an unknown function of the file arch/mips/net/bpf_jit.c of the component cBPF Handler. Executing a manipulation can lead to code injection. This vulnerability is tracked as CVE-2021-38300. The attack can be launched remotely. Moreover, an exploit is present. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability has been found in Linux Kernel up to 5.14.6 (Operating System) and classified as critical. This vulnerability affects some unknown processing of the file arch/mips/net/bpf_jit.c of the component cBPF Handler. The manipulation with an unknown input leads to a code injection vulnerability. The CWE definition for the vulnerability is CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was disclosed 09/20/2021. The advisory is available at openwall.com. This vulnerability was named CVE-2021-38300 since 08/09/2021. Technical details and also a private exploit are known. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

It is declared as proof-of-concept.

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

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Productinfo

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Vendor

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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: 8.8
VulDB Meta Temp Score: 8.4

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Code injection
CWE: CWE-94 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Private
Status: Proof-of-Concept

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: lore.kernel.org

Timelineinfo

08/09/2021 🔍
09/20/2021 +42 days 🔍
09/20/2021 +0 days 🔍
09/22/2021 +2 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: openwall.com
Status: Confirmed

CVE: CVE-2021-38300 (🔍)
GCVE (CVE): GCVE-0-2021-38300
GCVE (VulDB): GCVE-100-182902
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/20/2021 12:24
Updated: 09/22/2021 18:40
Changes: 09/20/2021 12:24 (44), 09/22/2021 18:40 (1)
Complete: 🔍
Cache ID: 216::103

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