Vulnerability CVE-2020-15272
Published: 2020-10-26

Description:
In the git-tag-annotation-action (open source GitHub Action) before version 1.0.1, an attacker can execute arbitrary (*) shell commands if they can control the value of [the `tag` input] or manage to alter the value of [the `GITHUB_REF` environment variable]. The problem has been patched in version 1.0.1. If you don't use the `tag` input you are most likely safe. The `GITHUB_REF` environment variable is protected by the GitHub Actions environment so attacks from there should be impossible. If you must use the `tag` input and cannot upgrade to `> 1.0.0` make sure that the value is not controlled by another Action.

Type:

CWE-78

 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') )

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.5/10
6.4/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Git-tag-annotation-action project -> Git-tag-annotation-action 

 References:
https://github.com/ericcornelissen/git-tag-annotation-action/commit/9f30756375cc4b1b6c66f274fc9c591fa901455a
https://github.com/ericcornelissen/git-tag-annotation-action/releases/tag/v1.0.1
https://github.com/ericcornelissen/git-tag-annotation-action/security/advisories/GHSA-hgx2-4pp9-357g
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