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CVE-2023-27581— github-slug-action vulnerable to arbitrary code execution

Quick assessment

Affected
rlespinasse github-slug-action
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

GitHub Slug action是用于在 GitHub 工作流程中公开 GitHub 环境变量的 slug 值的工具。 GitHub Slug action 4.0.0版本至4.4.1之前版本存在命令注入漏洞。攻击者利用该漏洞在GitHub运行器上执行代码，并泄露在CI管道中使用的任何信息。

CVSS 8.8 · High EPSS 1.58% · P73
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I. Basic Information for CVE-2023-27581

Vulnerability Information
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Vulnerability Title
github-slug-action vulnerable to arbitrary code execution
Source: CVE Program / CVE List V5
Vulnerability Description
github-slug-action is a GitHub Action to expose slug value of GitHub environment variables inside of one's GitHub workflow. Starting in version 4.0.0` and prior to version 4.4.1, this action uses the `github.head_ref` parameter in an insecure way. This vulnerability can be triggered by any user on GitHub on any workflow using the action on pull requests. They just need to create a pull request with a branch name, which can contain the attack payload. This can be used to execute code on the GitHub runners and to exfiltrate any secrets one uses in the CI pipeline. A patched action is available in version 4.4.1. No workaround is available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
GitHub Slug action 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GitHub Slug action是用于在 GitHub 工作流程中公开 GitHub 环境变量的 slug 值的工具。 GitHub Slug action 4.0.0版本至4.4.1之前版本存在命令注入漏洞。攻击者利用该漏洞在GitHub运行器上执行代码，并泄露在CI管道中使用的任何信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
rlespinasse github-slug-action >= 4.0.0, < 4.4.1 -

II. Public POCs for CVE-2023-27581

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III. Intelligence Information for CVE-2023-27581

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Patches & Fixes for CVE-2023-27581 (1)

Vendor Advisories for CVE-2023-27581 (1)

Security Blog Posts for CVE-2023-27581 (1)

Other References for CVE-2023-27581 (1)

IV. Related Vulnerabilities

Same weakness: CWE-77

V. Comments for CVE-2023-27581

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