CVE-2024-27920: nuclei Command Injection — Fix

Description

projectdiscovery/nuclei is a fast and customisable vulnerability scanner based on simple YAML based DSL. A significant security oversight was identified in Nuclei v3, involving the execution of unsigned code templates through workflows. This vulnerability specifically affects users utilizing custom workflows, potentially allowing the execution of malicious code on the user's system. This advisory outlines the impacted users, provides details on the security patch, and suggests mitigation strategies. The vulnerability is addressed in Nuclei v3.2.0. Users are strongly recommended to update to this version to mitigate the security risk. Users should refrain from using custom workflows if unable to upgrade immediately. Only trusted, verified workflows should be executed.

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CVSS v3.1 Score

7.4

HIGH

CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Weakness Type (CWE)

CWE-78 OS Command Injection

Affected Products

Vendor	Product	Versions
projectdiscovery	nuclei	3.0.0 — 3.2.0

References

Advisories & Patches

https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-w5wx-6g2r-r78q https://github.com/projectdiscovery/nuclei/security/advisories/GHSA-w5wx-6g2r-r78q

Other References

https://docs.projectdiscovery.io/templates/protocols/code https://docs.projectdiscovery.io/templates/reference/template-signing https://docs.projectdiscovery.io/templates/workflows/overview https://github.com/projectdiscovery/nuclei/pull/4822 https://docs.projectdiscovery.io/templates/protocols/code https://docs.projectdiscovery.io/templates/reference/template-signing https://docs.projectdiscovery.io/templates/workflows/overview https://github.com/projectdiscovery/nuclei/pull/4822

Frequently Asked Questions

What is CVE-2024-27920? +

projectdiscovery/nuclei is a fast and customisable vulnerability scanner based on simple YAML based DSL. A significant security oversight was identified in Nuclei v3, involving the execution of unsigned code templates through workflows. This vulnerability specifically affects users utilizing custom workflows, potentially allowing the execution of malicious code on the user's system. This advisory outlines the impacted users, provides details on the security patch, and suggests mitigation strategies. The vulnerability is addressed in Nuclei v3.2.0. Users are strongly recommended to update to this version to mitigate the security risk. Users should refrain from using custom workflows if unable to upgrade immediately. Only trusted, verified workflows should be executed. It has a CVSS v3.1 base score of 7.4 (HIGH).

How severe is CVE-2024-27920? +

CVE-2024-27920 has a CVSS v3.1 score of 7.4 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-27920? +

CVE-2024-27920 affects products from projectdiscovery, specifically: nuclei. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-27920? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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