github - ghsa-xpfq-7j72-x4px

GHSA-XPFQ-7J72-X4PX

Vulnerability from github – Published: 2025-04-13 00:30 – Updated: 2025-09-05 15:31

Details

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.

Severity ?

4.0 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2025-2814"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-329",
      "CWE-338"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-04-13T00:15:14Z",
    "severity": "MODERATE"
  },
  "details": "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.\n\nThis issue affects operating systems where \"/dev/urandom\u0027\" is unavailable.\u00a0 In that case, Crypt::CBC will fallback to use the insecure rand() function.",
  "id": "GHSA-xpfq-7j72-x4px",
  "modified": "2025-09-05T15:31:06Z",
  "published": "2025-04-13T00:30:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-2814"
    },
    {
      "type": "WEB",
      "url": "https://github.com/lstein/Lib-Crypt-CBC/commit/37111f7cd894bcec46156ba7f40a49c126ebf535.patch"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/dist/Crypt-CBC/source/lib/Crypt/CBC.pm#L777"
    },
    {
      "type": "WEB",
      "url": "https://perldoc.perl.org/functions/rand"
    },
    {
      "type": "WEB",
      "url": "https://security.metacpan.org/docs/guides/random-data-for-security.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-2814 (GCVE-0-2025-2814)

Vulnerability from cvelistv5 – Published: 2025-04-12 23:41 – Updated: 2025-09-05 13:21

Summary

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.

Severity ?

4 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CWE

CWE-338 - Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)
CWE-329 - Generation of Predictable IV with CBC Mode
CWE-331 - Insufficient Entropy

Assigner

CPANSec

References

URL

Tags

	https://perldoc.perl.org/functions/rand
	https://metacpan.org/dist/Crypt-CBC/source/lib/Cr…
	https://security.metacpan.org/docs/guides/random-…
	https://github.com/lstein/Lib-Crypt-CBC/commit/37…	patch

Impacted products

	Vendor	Product	Version
	LDS	Crypt::CBC	Affected: 1.21 , ≤ 3.05 (custom)

Credits

Robert Rothenberg (RRWO)

Show details on NVD website

JSON

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            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "LOW",
              "baseScore": 4,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
              "version": "3.1"
            }
          },
          {
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              "content": {
                "id": "CVE-2025-2814",
                "options": [
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                  },
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                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-04-14T18:21:53.532777Z",
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          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "defaultStatus": "unaffected",
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-XPFQ-7J72-X4PX

CVE-2025-2814 (GCVE-0-2025-2814)

Tags

Sightings

Nomenclature