Source: libdancer2-perl Version: 2.1.0-1 Severity: important Tags: security upstream X-Debbugs-Cc: [email protected], Debian Security Team <[email protected]> Control: found -1 1.1.2+dfsg-1
Hi, The following vulnerability was published for libdancer2-perl. CVE-2026-13577[0]: | Dancer2 versions through 2.1.0 for Perl generate insecure session | ids when required CSPRNG modules are unavailable. | Dancer2::Core::Role::SessionFactory::generate_id silently falls back | to a built-in rand-derived session id unless both | Math::Random::ISAAC::XS and Crypt::URandom are available. The | fallback session id is generated from a SHA-1 hash of a call to the | built-in rand function, the absolute path of the | Dancer2::Core::Role::SessionFactory module, an internal counter, the | process id, the module instance memory address, and a shuffled | string of characters (using the List::Util::shuffle function, which | also uses the built-in rand function). These are all low-entropy | and easily guessed sources. The built-in rand() function is seeded | with 32-bits and considered unsuitable for security applications. | Predictable session ids could allow an attacker to gain access to | systems. If you fix the vulnerability please also make sure to include the CVE (Common Vulnerabilities & Exposures) id in your changelog entry. For further information see: [0] https://security-tracker.debian.org/tracker/CVE-2026-13577 https://www.cve.org/CVERecord?id=CVE-2026-13577 [1] https://lists.security.metacpan.org/cve-announce/msg/41975698/ Regards, Salvatore
