CVE-2024-56321: gocd Input Validation Flaw — Fix

Description

GoCD is a continuous deliver server. GoCD versions 18.9.0 through 24.4.0 (inclusive) can allow GoCD admins to abuse the backup configuration "post-backup script" feature to potentially execute arbitrary scripts on the hosting server or container as GoCD's user, rather than pre-configured scripts. In practice the impact of this vulnerability is limited, as in most configurations a user who can log into the GoCD UI as an admin also has host administration permissions for the host/container that GoCD runs on, in order to manage artifact storage and other service-level configuration options. Additionally, since a GoCD admin has ability to configure and schedule pipelines tasks on all GoCD agents available to the server, the fundamental functionality of GoCD allows co-ordinated task execution similar to that of post-backup-scripts. However in restricted environments where the host administration is separated from the role of a GoCD admin, this may be unexpected. The issue is fixed in GoCD 24.5.0. Post-backup scripts can no longer be executed from within certain sensitive locations on the GoCD server. No known workarounds are available.

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CVSS v3.1 Score

3.8

LOW

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

Weakness Type (CWE)

CWE-20 Improper Input Validation

CWE-36 CWE-36

Affected Products

Vendor	Product	Versions
thoughtworks	gocd	18.9.0 — 24.5.0

References

Advisories & Patches

https://github.com/gocd/gocd/commit/631f315d17fcb73f310eee6c881974c9b55ca9f0 https://github.com/gocd/gocd/security/advisories/GHSA-7jr3-gh3w-vjxq

Other References

https://github.com/gocd/gocd/releases/tag/24.5.0 https://www.gocd.org/releases/#24-5-0

Frequently Asked Questions

What is CVE-2024-56321? +

GoCD is a continuous deliver server. GoCD versions 18.9.0 through 24.4.0 (inclusive) can allow GoCD admins to abuse the backup configuration "post-backup script" feature to potentially execute arbitrary scripts on the hosting server or container as GoCD's user, rather than pre-configured scripts. In practice the impact of this vulnerability is limited, as in most configurations a user who can log into the GoCD UI as an admin also has host administration permissions for the host/container that GoCD runs on, in order to manage artifact storage and other service-level configuration options. Additionally, since a GoCD admin has ability to configure and schedule pipelines tasks on all GoCD agents available to the server, the fundamental functionality of GoCD allows co-ordinated task execution similar to that of post-backup-scripts. However in restricted environments where the host administration is separated from the role of a GoCD admin, this may be unexpected. The issue is fixed in GoCD 24.5.0. Post-backup scripts can no longer be executed from within certain sensitive locations on the GoCD server. No known workarounds are available. It has a CVSS v3.1 base score of 3.8 (LOW).

How severe is CVE-2024-56321? +

CVE-2024-56321 has a CVSS v3.1 score of 3.8 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2024-56321? +

CVE-2024-56321 affects products from thoughtworks, specifically: gocd. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-56321? +

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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