جزئیات آسیب‌پذیری

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.

• https://github.com/mojolicious/mojo/pull/1791 issue-tracking
• https://github.com/mojolicious/mojo/pull/2200 issue-tracking
• https://www.synacktiv.com/publications/baking-mojolicious-cookies technical-description
• https://medium.com/securing/baking-mojolicious-cookies-revisited-a-case-study-of-solving-security-problems-through-security-by-13da7c225802 technical-description
• https://metacpan.org/release/SRI/Mojolicious-9.39/source/lib/Mojolicious.pm#L51 related
• https://github.com/hashcat/hashcat/pull/4090 exploit
• https://lists.debian.org/debian-perl/2025/05/msg00016.html mailing-list
• https://lists.debian.org/debian-perl/2025/05/msg00017.html mailing-list
• https://lists.debian.org/debian-perl/2025/05/msg00018.html mailing-list
• https://github.com/mojolicious/mojo/pull/2252 issue-tracking
• https://docs.mojolicious.org/Mojolicious/Guides/FAQ#What-does-Your-secret-passphrase-needs-to-be-changed-mean technical-description