PT-2025-16174 · Unknown+2 · Crypt::Cbc+2

Robert Rothenberg · Published 2025-04-12 · Updated 2025-08-27 · CVE-2025-2814

Positive Technologies (AI Summary)

CVSS v3.1

4.0

Medium

Base vector

AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Name of the Vulnerable Software and Affected Versions: Crypt::CBC versions 1.21 through 3.04

Description: The issue affects Crypt::CBC for Perl, where versions between 1.21 and 3.04 may use the rand() function as the default source of entropy, which is not cryptographically secure, for cryptographic functions. This issue affects operating systems where "/dev/urandom" is unavailable, causing Crypt::CBC to fallback to the insecure rand() function.

Recommendations: For Crypt::CBC versions 1.21 through 3.04, consider using a secure source of entropy instead of the rand() function. As a temporary workaround, restrict the use of Crypt::CBC in environments where "/dev/urandom" is unavailable to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-331

CWE-338

CWE-329

Related Identifiers

BDU:2025-08560

CVE-2025-2814

OPENSUSE-SU-2025:15495-1

Affected Products

Crypt::Cbc

Debian

Red Os

References · 26

• https://github.com/lstein/Lib-Crypt-CBC/commit/37111f7cd894bcec46156ba7f40a49c126ebf535.patch · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2025-2814 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-08560 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2025:15495-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-2814 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2025-2814 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-2814 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-2814 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2025-2814 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-2814 · Security Note
• https://twitter.com/cybercronai/status/1911477073144664455 · Twitter Post
• https://metacpan.org/dist/Crypt-CBC/source/lib/Crypt/CBC.pm#L777 · Note
• https://t.me/cvenotify/118984 · Telegram Post
• https://twitter.com/CVEnew/status/1911239389868335549 · Twitter Post
• https://security.metacpan.org/docs/guides/random-data-for-security.html · Note