CVE-2023-6944: backstage Information Disclosure — Fix

Description

A flaw was found in the Red Hat Developer Hub (RHDH). The catalog-import function leaks GitLab access tokens on the frontend when the base64 encoded GitLab token includes a newline at the end of the string. The sanitized error can display on the frontend, including the raw access token. Upon gaining access to this token and depending on permissions, an attacker could push malicious code to repositories, delete resources in Git, revoke or generate new keys, and sign code illegitimately.

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CVSS v3.1 Score

5.7

MEDIUM

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

Weakness Type (CWE)

CWE-209 CWE-209

Affected Products

Vendor	Product	Versions
redhat	red_hat_developer_hub	< 1.21.0
linuxfoundation	backstage	< 1.21.0

References

Advisories & Patches

https://access.redhat.com/security/cve/CVE-2023-6944 https://bugzilla.redhat.com/show_bug.cgi?id=2255204 https://access.redhat.com/security/cve/CVE-2023-6944 https://bugzilla.redhat.com/show_bug.cgi?id=2255204

Other References

https://access.redhat.com/errata/RHBA-2024:5869

Frequently Asked Questions

What is CVE-2023-6944? +

A flaw was found in the Red Hat Developer Hub (RHDH). The catalog-import function leaks GitLab access tokens on the frontend when the base64 encoded GitLab token includes a newline at the end of the string. The sanitized error can display on the frontend, including the raw access token. Upon gaining access to this token and depending on permissions, an attacker could push malicious code to repositories, delete resources in Git, revoke or generate new keys, and sign code illegitimately. It has a CVSS v3.1 base score of 5.7 (MEDIUM).

How severe is CVE-2023-6944? +

CVE-2023-6944 has a CVSS v3.1 score of 5.7 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2023-6944? +

CVE-2023-6944 affects products from linuxfoundation, redhat, specifically: backstage, red_hat_developer_hub. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-6944? +

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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