Vulnerability-Lookup

ubuntu-cve-2026-6656

Vulnerability from osv_ubuntu

Published

2026-07-21 00:00

Modified

2026-07-21 00:00

Summary

Details

(Crypt::Password versions through 0.28 for Perl are susceptible to timi ...)

Severity

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-6656	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-6656	REPORT
	https://rt.cpan.org/Ticket/Display.html?id=180162	REPORT
	https://lists.security.metacpan.org/cve-announce/…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libcrypt-password-perl",
            "binary_version": "0.28-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "libcrypt-password-perl",
        "purl": "pkg:deb/ubuntu/libcrypt-password-perl@0.28-2?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.28-1",
        "0.28-2"
      ]
    }
  ],
  "aliases": [],
  "details": "(Crypt::Password versions through 0.28 for Perl are susceptible to timi ...)",
  "id": "UBUNTU-CVE-2026-6656",
  "modified": "2026-07-21T00:00:00Z",
  "published": "2026-07-21T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-6656"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-6656"
    },
    {
      "type": "REPORT",
      "url": "https://rt.cpan.org/Ticket/Display.html?id=180162"
    },
    {
      "type": "REPORT",
      "url": "https://lists.security.metacpan.org/cve-announce/msg/41975673/"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-6656"
  ]
}

CVE-2026-6656 (GCVE-0-2026-6656)

Vulnerability from cvelistv5 – Published: 2026-07-20 07:01 – Updated: 2026-07-20 18:38

Title

Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks

Summary

Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks. The check_password method uses the built-in eq operator. This allows discrepancies in timing to be used to guess the underlying hash.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-208 - Observable Timing Discrepancy

Assigner

CPANSec

References

3 references

URL	Tags
https://metacpan.org/release/DRSTEVE/Crypt-Passwo…
https://rt.cpan.org/Ticket/Display.html?id=180162	issue-tracking
http://www.openwall.com/lists/oss-security/2026/07/20/4

Impacted products

1 product

Vendor	Product	Version
DRSTEVE	Crypt::Password	Affected: 0 , ≤ 0.28 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-6656",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-20T13:06:09.076479Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-20T13:06:13.321Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-07-20T18:38:21.362Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/07/20/4"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Crypt-Password",
          "product": "Crypt::Password",
          "programFiles": [
            "lib/Crypt/Password.pm"
          ],
          "programRoutines": [
            {
              "name": "Crypt::Password::check_password"
            }
          ],
          "vendor": "DRSTEVE",
          "versions": [
            {
              "lessThanOrEqual": "0.28",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks.\n\nThe check_password method uses the built-in eq operator. This allows discrepancies in timing to be used to guess the underlying hash."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-208",
              "description": "CWE-208 Observable Timing Discrepancy",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T07:01:45.818Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "url": "https://metacpan.org/release/DRSTEVE/Crypt-Password-0.28/source/lib/Crypt/Password.pm#L190-193"
        },
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://rt.cpan.org/Ticket/Display.html?id=180162"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Crypt::Password versions through 0.28 for Perl are susceptible to timing attacks",
      "workarounds": [
        {
          "lang": "en",
          "value": "This module has not been updated since 2012.\n\nUsers should migrate to an alternative solution."
        }
      ],
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-6656",
    "datePublished": "2026-07-20T07:01:45.818Z",
    "dateReserved": "2026-04-20T08:08:16.230Z",
    "dateUpdated": "2026-07-20T18:38:21.362Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

ubuntu-cve-2026-6656

Vulnerability from osv_ubuntu

CVE-2026-6656 (GCVE-0-2026-6656)

Tags

Sightings

Nomenclature