CVE-2026-41564

Katalog CVE

CVSS 7.5 · High EPSS 0,51%

Kerentanan Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG) pada dcit cryptx. Skor CVSS 3.1 7.5 (High) menurut CISA ADP.

Deskripsi (NVD)

CryptX versions before 0.088 for Perl do not reseed the Crypt::PK PRNG state after forking. The Crypt::PK::RSA, Crypt::PK::DSA, Crypt::PK::DH, Crypt::PK::ECC, Crypt::PK::Ed25519 and Crypt::PK::X25519 modules seed a per-object PRNG state in their constructors and reuse it without fork detection. A Crypt::PK::* object created before `fork()` shares byte-identical PRNG state with every child process, and any randomized operation they perform can produce identical output, including key generation. Two ECDSA or DSA signatures from different processes are enough to recover the signing private key through nonce-reuse key recovery. This affects preforking services such as the Starman web server, where a Crypt::PK::* object loaded at startup is inherited by every worker process.

Rincian

Terbit di NVD

23 April 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-335: Incorrect Usage of Seeds in Pseudo-Random Number Generator (PRNG)
CWE-338: Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)

EPSS (30 hari)

0,51% peluang dieksploitasi; lebih tinggi dari 42,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/DCIT/perl-CryptX/security/advisories/GHSA-24c2-gp6c-24c6 advisory vendor
• https://github.com/DCIT/perl-CryptX/commit/9a1dd3e0c27d68e32450be5538b864c2b115ee15.patch patch
• http://www.openwall.com/lists/oss-security/2026/04/23/2 mailing list · advisory pihak ketiga
• https://metacpan.org/release/MIK/CryptX-0.088 product