8.8

CVE-2023-22726

Exploit

Unrestricted file upload leading to privilege escalation in act

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Act Project ≫ Act SwPlatformgo Version < 0.2.40
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.26% 0.656
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
security-advisories@github.com 8 2.1 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

CWE-434 Unrestricted Upload of File with Dangerous Type

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

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