LDS Crypt::CBC up to 3.04 on Perl rand weak prng

CVSS Meta Temp Score
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CTI Interest Score
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3.7$0-$5k0.00

Summaryinfo

A vulnerability was found in LDS Crypt::CBC up to 3.04 on Perl. It has been declared as problematic. This affects the function rand. Executing a manipulation can lead to weak prng. This vulnerability is handled as CVE-2025-2814. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in LDS Crypt::CBC up to 3.04 on Perl. It has been declared as problematic. This vulnerability affects the function rand. The manipulation with an unknown input leads to a weak prng vulnerability. The CWE definition for the vulnerability is CWE-338. The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong. As an impact it is known to affect confidentiality. CVE summarizes:

Crypt::CBC versions between 1.21 and 3.04 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.

The weakness was released by Robert Rothenberg. The advisory is shared for download at perldoc.perl.org. This vulnerability was named CVE-2025-2814 since 03/26/2025. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.001.

The vulnerability scanner Nessus provides a plugin with the ID 243932 (Fedora 42 : perl-Crypt-CBC (2025-f7bc7b789f)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (243932) and EUVD (EUVD-2025-10846). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Weak prng
CWE: CWE-338 / CWE-331 / CWE-330
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 243932
Nessus Name: Fedora 42 : perl-Crypt-CBC (2025-f7bc7b789f)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/26/2025 🔍
04/13/2025 +17 days 🔍
04/13/2025 +0 days 🔍
08/06/2025 +115 days 🔍

Sourcesinfo

Advisory: perldoc.perl.org
Researcher: Robert Rothenberg
Status: Not defined

CVE: CVE-2025-2814 (🔍)
GCVE (CVE): GCVE-0-2025-2814
GCVE (VulDB): GCVE-100-304576
EUVD: 🔍

Entryinfo

Created: 04/13/2025 03:36
Updated: 08/06/2025 15:03
Changes: 04/13/2025 03:36 (55), 06/14/2025 23:20 (1), 06/15/2025 01:57 (1), 08/06/2025 15:03 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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