CVEvulnerability
CVE-2024-58135
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2025-05-03
- Last modified
- 2026-06-17
- Assigner
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Weaknesses
- CWE-338
Description
Mojolicious versions from 7.28 through 9.45 for Perl will generate weak HMAC session cookie secrets via "mojo generate app" by default.
When creating a default app skeleton with the "mojo generate app" tool, a weak secret is written to the application's configuration file using the insecure rand() function, and used for authenticating and protecting the integrity of the application's sessions. This may allow an attacker to brute force the application's session keys.
Release 9.46 fixes the issue by providing high quality randomness, even in absence of CryptX.
Users should be aware that the update does not replace previously generated weak secrets. A secret generated with the previous version MUST be replaced to ensure the updated version is using a strong secret.
Affected configurations
• mojolicious mojolicious (>= 7.28 <= 9.40)
Related
Weakness · CWE (1)
- CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) weakness
References
- https://github.com/hashcat/hashcat/pull/4090 Issue Tracking, Patch
- https://github.com/mojolicious/mojo/commit/789cfa43f9118852b38cbd1fd0a2596bcb9821ea.patch github.com
- https://github.com/mojolicious/mojo/commit/fb3733f92cc8a3344e6d615b3c7dac9d538eeab0.patch github.com
- https://github.com/mojolicious/mojo/pull/2200 Exploit, Issue Tracking, Patch
- https://lists.debian.org/debian-perl/2025/05/msg00016.html lists.debian.org
- https://lists.debian.org/debian-perl/2025/05/msg00017.html lists.debian.org
- https://lists.debian.org/debian-perl/2025/05/msg00018.html lists.debian.org
- https://metacpan.org/release/SRI/Mojolicious-7.28/source/lib/Mojolicious/Command/generate/app.pm#L220 Product
- https://metacpan.org/release/SRI/Mojolicious-9.38/source/lib/Mojolicious/Command/Author/generate/app.pm#L202 Product
- https://metacpan.org/release/SRI/Mojolicious-9.39/source/lib/Mojo/Util.pm#L181 Product
- https://metacpan.org/release/SRI/Mojolicious-9.46/source/Changes metacpan.org
- https://perldoc.perl.org/functions/rand Product
- https://security.metacpan.org/docs/guides/random-data-for-security.html Technical Description