9.1

CVE-2025-40931

Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id

Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id.

Apache::Session::Generate::MD5 generates session ids insecurely. The default session id generator returns a MD5 hash seeded with the built-in rand() function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage. Predicable session ids could allow an attacker to gain access to systems.

Note that the libapache-session-perl package in some Debian-based Linux distributions may be patched to use Crypt::URandom.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.58% 0.432
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
134c704f-9b21-4f2e-91b3-4a467353bcc0 9.1 3.9 5.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong.

CWE-340 Generation of Predictable Numbers or Identifiers

The product uses a scheme that generates numbers or identifiers that are more predictable than required.

https://security.metacpan.org/docs/guides/random-data-for-security.html
Third Party Advisory
Mailing List
https://metacpan.org/dist/Apache-Session/source/lib/Apache/Session/Generate/MD5.pm#L27
Product
http://www.openwall.com/lists/oss-security/2026/03/05/3
Third Party Advisory
Mailing List
https://github.com/chorny/Apache-Session/issues/4
Issue Tracking
https://rt.cpan.org/Ticket/Display.html?id=173631
Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=930659
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/work_items/1633
https://metacpan.org/pod/Apache::Session::Generate::Random
https://salsa.debian.org/perl-team/modules/packages/libapache-session-perl/-/commit/bdabd71c2f91b18526e31a9dc52b4c17b3d246b7#898a4b8b00022df1b8689910b67707f3e738d180
https://www.openwall.com/lists/oss-security/2019/06/15/1