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FreeBSD : p5-Crypt-CBC -- Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) (cd7f969e-6cb4-11f0-97c4-40b034429ecf)

medium Nessus Plugin ID 243016

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the cd7f969e-6cb4-11f0-97c4-40b034429ecf advisory.

 Lib-Crypt-CBC project reports:

 Crypt::CBC versions between 1.21 and 3.05 for Perl 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.
 In that case, Crypt::CBC will fallback to use the insecure rand() function.


Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2025-2814

http://www.nessus.org/u?0a395bcd

Plugin Details

Severity: Medium

ID: 243016

File Name: freebsd_pkg_cd7f969e6cb411f097c440b034429ecf.nasl

Version: 1.1

Type: local

Published: 7/30/2025

Updated: 7/30/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2025-2814

CVSS v3

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.5

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:p5-crypt-cbc, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 7/29/2025

Vulnerability Publication Date: 4/12/2025

Reference Information

CVE: CVE-2025-2814