bikeshed up to 2.x on Python Source File os command injection

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in bikeshed up to 2.x on Python. It has been declared as critical. Impacted is an unknown function of the component Source File Handler. The manipulation results in os command injection. This vulnerability is known as CVE-2021-23422. Attacking locally is a requirement. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in bikeshed up to 2.x on Python. Affected is some unknown processing of the component Source File Handler. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was published 08/16/2021 as SNYK-PYTHON-BIKESHED-1537646. The advisory is shared for download at snyk.io. This vulnerability is traded as CVE-2021-23422. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1202.

The vulnerability scanner Nessus provides a plugin with the ID 262834 (Linux Distros Unpatched Vulnerability : CVE-2021-23422), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.0.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (262834). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
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: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 262834
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2021-23422

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: bikeshed 3.0.0
Patch: github.com

Timelineinfo

01/08/2021 🔍
08/16/2021 +219 days 🔍
08/16/2021 +0 days 🔍
09/11/2025 +1486 days 🔍

Sourcesinfo

Advisory: SNYK-PYTHON-BIKESHED-1537646
Status: Confirmed

CVE: CVE-2021-23422 (🔍)
GCVE (CVE): GCVE-0-2021-23422
GCVE (VulDB): GCVE-100-180900

Entryinfo

Created: 08/16/2021 13:55
Updated: 09/11/2025 00:25
Changes: 08/16/2021 13:55 (40), 08/18/2021 14:46 (2), 08/18/2021 14:51 (1), 09/11/2025 00:25 (16)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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