CVE-2024-58134: mojolicious — Exploit & Fix

Description

Mojolicious versions from 0.999922 for Perl uses a hard coded string, or the application's class name, as an HMAC session cookie secret by default. These predictable default secrets can be exploited by an attacker to forge session cookies. An attacker who knows or guesses the secret could compute valid HMAC signatures for the session cookie, allowing them to tamper with or hijack another user’s session.

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CVSS v3.1 Score

8.1

HIGH

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

Weakness Type (CWE)

CWE-321 CWE-321

CWE-331 CWE-331

Affected Products

Vendor	Product	Versions
mojolicious	mojolicious	0.999922 — 9.40

References

Advisories & Patches

https://github.com/hashcat/hashcat/pull/4090 https://github.com/mojolicious/mojo/pull/1791 https://github.com/mojolicious/mojo/pull/2200

Exploits

https://www.synacktiv.com/publications/baking-mojolicious-cookies

Other References

https://docs.mojolicious.org/Mojolicious/Guides/FAQ#What-does-Your-secret-passphrase-needs-to-be-changed-mean https://github.com/mojolicious/mojo/pull/2252 https://lists.debian.org/debian-perl/2025/05/msg00016.html https://lists.debian.org/debian-perl/2025/05/msg00017.html https://lists.debian.org/debian-perl/2025/05/msg00018.html https://medium.com/securing/baking-mojolicious-cookies-revisited-a-case-study-of-solving-security-problems-through-security-by-13da7c225802 https://metacpan.org/release/SRI/Mojolicious-9.39/source/lib/Mojolicious.pm#L51

Frequently Asked Questions

What is CVE-2024-58134? +

Mojolicious versions from 0.999922 for Perl uses a hard coded string, or the application's class name, as an HMAC session cookie secret by default. These predictable default secrets can be exploited by an attacker to forge session cookies. An attacker who knows or guesses the secret could compute valid HMAC signatures for the session cookie, allowing them to tamper with or hijack another user’s session. It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2024-58134? +

CVE-2024-58134 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-58134? +

CVE-2024-58134 affects products from mojolicious, specifically: mojolicious. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-58134? +

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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CVE-2024-58134