CVE-2023-22726

 

Published at: - 20-01-2023 11:15

Last modified: - 23-01-2023 04:08

Total changes: - 2

Description

act is a project which allows for local running of github actions. The artifact server that stores artifacts from Github Action runs does not sanitize path inputs. This allows an attacker to download and overwrite arbitrary files on the host from a Github Action. This issue may lead to privilege escalation. The /upload endpoint is vulnerable to path traversal as filepath is user controlled, and ultimately flows into os.Mkdir and os.Open. The /artifact endpoint is vulnerable to path traversal as the path is variable is user controlled, and the specified file is ultimately returned by the server. This has been addressed in version 0.2.40. Users are advised to upgrade. Users unable to upgrade may, during implementation of Open and OpenAtEnd for FS, ensure to use ValidPath() to check against path traversal or clean the user-provided paths manually.

Common Vulnerability Scoring System (CVSS)

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Verification logic

 

Reference

• https://securitylab.github.com/advisories/GHSL-2023-004_act/
• https://github.com/nektos/act/blob/master/pkg/artifacts/server.go#L65
• https://github.com/nektos/act/security/advisories/GHSA-pc99-qmg4-rcff
• https://github.com/nektos/act/blob/v0.2.35/pkg/artifacts/server.go#LL103C2-L103C2
• https://github.com/nektos/act/commit/63ae215071f94569d910964bdee866d91d6e3a10
• https://github.com/nektos/act/blob/v0.2.35/pkg/artifacts/server.go#L245
• https://github.com/nektos/act/issues/1553

 

Keywords

NVD

 

CVE-2023-22726

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures