Vulnerability-Lookup

GHSA-6R7M-2WH8-438W

Vulnerability from github – Published: 2026-04-21 18:31 – Updated: 2026-04-21 21:31

Details

Storable versions before 3.05 for Perl has a stack overflow.

The retrieve_hook function stored the length of the class name into a signed integer but in read operations treated the length as unsigned. This allowed an attacker to craft data that could trigger the overflow.

Severity ?

10.0 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2017-20230"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-121"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-21T16:16:18Z",
    "severity": "CRITICAL"
  },
  "details": "Storable versions before 3.05 for Perl has a stack overflow.\n\nThe retrieve_hook function stored the length of the class name into a signed integer but in read operations treated the length as unsigned. This allowed an attacker to craft data that could trigger the overflow.",
  "id": "GHSA-6r7m-2wh8-438w",
  "modified": "2026-04-21T21:31:23Z",
  "published": "2026-04-21T18:31:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-20230"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Perl/perl5/issues/15831"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Perl/perl5/commit/a258c17c6937f79529c8319a829310e09cdbd216.patch"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/RURBAN/Storable-3.05/changes"
    },
    {
      "type": "WEB",
      "url": "https://www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242533.html"
    },
    {
      "type": "WEB",
      "url": "https://www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242703.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/04/21/5"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2017-20230 (GCVE-0-2017-20230)

Vulnerability from cvelistv5 – Published: 2026-04-21 15:26 – Updated: 2026-04-21 18:22

Title

Storable versions before 3.05 for Perl has a stack overflow

Summary

Storable versions before 3.05 for Perl has a stack overflow. The retrieve_hook function stored the length of the class name into a signed integer but in read operations treated the length as unsigned. This allowed an attacker to craft data that could trigger the overflow.

Severity ?

10 (Critical)


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

CWE

CWE-121 - Stack-based Buffer Overflow

Assigner

CPANSec

References

URL

Tags

	https://github.com/Perl/perl5/issues/15831	issue-tracking
	https://github.com/Perl/perl5/commit/a258c17c6937…	patch
	https://metacpan.org/release/RURBAN/Storable-3.05…	release-notes
	https://www.nntp.perl.org/group/perl.perl5.porter…	mailing-list
	https://www.nntp.perl.org/group/perl.perl5.porter…	mailing-list

Impacted products

	Vendor	Product	Version
	NWCLARK	Storable	Affected: 0 , < 3.05 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 10,
              "baseSeverity": "CRITICAL",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "NONE",
              "scope": "CHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2017-20230",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-21T16:28:22.354136Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-21T16:29:10.971Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2026-04-21T18:22:25.354Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2026/04/21/5"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Storable",
          "product": "Storable",
          "repo": "https://github.com/Perl/perl5/",
          "vendor": "NWCLARK",
          "versions": [
            {
              "lessThan": "3.05",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Storable versions before 3.05 for Perl has a stack overflow.\n\nThe retrieve_hook function stored the length of the class name into a signed integer but in read operations treated the length as unsigned. This allowed an attacker to craft data that could trigger the overflow."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121 Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-21T15:30:39.000Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/Perl/perl5/issues/15831"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/Perl/perl5/commit/a258c17c6937f79529c8319a829310e09cdbd216.patch"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/RURBAN/Storable-3.05/changes"
        },
        {
          "tags": [
            "mailing-list"
          ],
          "url": "https://www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242533.html"
        },
        {
          "tags": [
            "mailing-list"
          ],
          "url": "https://www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242703.html"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to Storable version 3.05 or newer."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "timeline": [
        {
          "lang": "en",
          "time": "2017-01-24T00:00:00.000Z",
          "value": "Perl bug RT1 30635 reported."
        },
        {
          "lang": "en",
          "time": "2017-01-25T00:00:00.000Z",
          "value": "Patch committed."
        },
        {
          "lang": "en",
          "time": "2017-01-29T00:00:00.000Z",
          "value": "Storable version 3.05 released."
        },
        {
          "lang": "en",
          "time": "2018-02-20T00:00:00.000Z",
          "value": "Perl v5.27.9 released with Storable 3.06."
        },
        {
          "lang": "en",
          "time": "2018-10-06T00:00:00.000Z",
          "value": "issue assigned CPANSA-Storable-2017-01 in the CPANSA distribution."
        }
      ],
      "title": "Storable versions before 3.05 for Perl has a stack overflow",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2017-20230",
    "datePublished": "2026-04-21T15:26:18.216Z",
    "dateReserved": "2026-03-28T19:24:26.125Z",
    "dateUpdated": "2026-04-21T18:22:25.354Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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-6R7M-2WH8-438W

CVE-2017-20230 (GCVE-0-2017-20230)

Tags

Sightings

Nomenclature