CVE-2024-58135: medium-severity vulnerability in SRI Mojolicious
Mojolicious versions from 7.28 through 9.45 for Perl will generate weak HMAC session cookie secrets via "mojo generate app" by default
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
SRI · MojoliciousRelated CVEs — SRI Mojolicious
In the same product, most dangerous first.
CVE-2024-58134HIGHMojolicious versions from 0.999922 for Perl uses a hard coded string, or the application's class name, as an HMAC session cookie secret by defaultEPSS 0.6%CVE-2026-15747CRITICALMojolicious versions from 4.59 before 9.48 for Perl expose a stable representation of the session CSRF token to a BREACH compression oracleEPSS 0.3%
References
https://github.com/hashcat/hashcat/pull/4090https://github.com/mojolicious/mojo/commit/789cfa43f9118852b38cbd1fd0a2596bcb9821ea.patchhttps://github.com/mojolicious/mojo/commit/fb3733f92cc8a3344e6d615b3c7dac9d538eeab0.patchhttps://github.com/mojolicious/mojo/pull/2200https://lists.debian.org/debian-perl/2025/05/msg00016.htmlhttps://lists.debian.org/debian-perl/2025/05/msg00017.htmlhttps://lists.debian.org/debian-perl/2025/05/msg00018.htmlhttps://metacpan.org/release/SRI/Mojolicious-7.28/source/lib/Mojolicious/Command/generate/app.pm#L220https://metacpan.org/release/SRI/Mojolicious-9.38/source/lib/Mojolicious/Command/Author/generate/app.pm#L202https://metacpan.org/release/SRI/Mojolicious-9.39/source/lib/Mojo/Util.pm#L181https://metacpan.org/release/SRI/Mojolicious-9.46/source/Changeshttps://perldoc.perl.org/functions/rand