CVE-2025-40931

Katalog CVE

CVSS 9.1 · Critical EPSS 0,59%

Kerentanan Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) pada chorny apache. Skor CVSS 3.1 9.1 (Critical) menurut CISA ADP.

Deskripsi (NVD)

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.

Rincian

Terbit di NVD

5 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

9.1 (Critical), sumber CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
CWE-340: Generation of Predictable Numbers or Identifiers

EPSS (30 hari)

0,59% peluang dieksploitasi; lebih tinggi dari 46,9% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://rt.cpan.org/Ticket/Display.html?id=173631 advisory pihak ketiga
• https://security.metacpan.org/docs/guides/random-data-for-security.html mailing list · advisory pihak ketiga
• http://www.openwall.com/lists/oss-security/2026/03/05/3 mailing list · advisory pihak ketiga
• https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=930659
• https://github.com/chorny/Apache-Session/issues/4 issue tracking
• https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/work_items/1633
• https://metacpan.org/dist/Apache-Session/source/lib/Apache/Session/Generate/MD5.pm#L27 product
• https://metacpan.org/pod/Apache::Session::Generate::Random
• https://salsa.debian.org/perl-team/modules/packages/libapache-session-perl/-/commit/bdabd71c2f91b18526e31a9dc5...
• https://www.openwall.com/lists/oss-security/2019/06/15/1