cvelistv5 - cve-2025-11683

CVE-2025-11683 (GCVE-0-2025-11683)

Vulnerability from cvelistv5 – Published: 2025-10-16 00:14 – Updated: 2025-10-16 13:42

Summary

YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read The issue is seen with complex YAML files with a hash of all keys and empty values. There is no indication that the issue leads to accessing memory outside that allocated to the module.

Severity ?

6.5 (Medium)


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

CWE

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Assigner

CPANSec

References

URL

Tags

	https://github.com/cpan-authors/YAML-Syck/pull/65	patch
	https://metacpan.org/dist/YAML-Syck/changes	release-notes

Impacted products

	Vendor	Product	Version
	TODDR	YAML::Syck	Affected: 0 , < 1.36 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "ADJACENT_NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 6.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-11683",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-16T13:41:01.868545Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-16T13:42:17.584Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "YAML-Syck",
          "product": "YAML::Syck",
          "programFiles": [
            "token.c"
          ],
          "repo": "https://github.com/cpan-authors/YAML-Syck",
          "vendor": "TODDR",
          "versions": [
            {
              "lessThan": "1.36",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure\u003cbr\u003e\u003cbr\u003eMissing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read\u003cbr\u003e\u003cbr\u003eThe issue is seen with complex YAML files with a hash of all keys and empty values.\u0026nbsp; There is no indication that the issue leads to accessing memory outside that allocated to the module.\u003cbr\u003e"
            }
          ],
          "value": "YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure\n\nMissing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read\n\nThe issue is seen with complex YAML files with a hash of all keys and empty values.\u00a0 There is no indication that the issue leads to accessing memory outside that allocated to the module."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-540",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-540 Overread Buffers"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-119",
              "description": "CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-16T00:14:41.769Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/cpan-authors/YAML-Syck/pull/65"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/dist/YAML-Syck/changes"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Upgrade to version 1.36 or higher"
            }
          ],
          "value": "Upgrade to version 1.36 or higher"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "YAML::Syck versions before 1.36 for Perl has missing Null-Terminators which causes Out-of-Bounds Read and potential Information Disclosure",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Apply the patch"
            }
          ],
          "value": "Apply the patch"
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2025-11683",
    "datePublished": "2025-10-16T00:14:41.769Z",
    "dateReserved": "2025-10-13T12:35:07.822Z",
    "dateUpdated": "2025-10-16T13:42:17.584Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-11683\",\"sourceIdentifier\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"published\":\"2025-10-16T01:15:32.890\",\"lastModified\":\"2025-10-16T15:28:59.610\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure\\n\\nMissing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read\\n\\nThe issue is seen with complex YAML files with a hash of all keys and empty values.\u00a0 There is no indication that the issue leads to accessing memory outside that allocated to the module.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"ADJACENT_NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-119\"}]}],\"references\":[{\"url\":\"https://github.com/cpan-authors/YAML-Syck/pull/65\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"},{\"url\":\"https://metacpan.org/dist/YAML-Syck/changes\",\"source\":\"9b29abf9-4ab0-4765-b253-1875cd9b441e\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2025-11683\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-10-16T13:41:01.868545Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-10-16T13:42:05.706Z\"}}], \"cna\": {\"title\": \"YAML::Syck versions before 1.36 for Perl has missing Null-Terminators which causes Out-of-Bounds Read and potential Information Disclosure\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"impacts\": [{\"capecId\": \"CAPEC-540\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-540 Overread Buffers\"}]}], \"affected\": [{\"repo\": \"https://github.com/cpan-authors/YAML-Syck\", \"vendor\": \"TODDR\", \"product\": \"YAML::Syck\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"1.36\", \"versionType\": \"custom\"}], \"packageName\": \"YAML-Syck\", \"programFiles\": [\"token.c\"], \"collectionURL\": \"https://cpan.org/modules\", \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Upgrade to version 1.36 or higher\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Upgrade to version 1.36 or higher\", \"base64\": false}]}], \"references\": [{\"url\": \"https://github.com/cpan-authors/YAML-Syck/pull/65\", \"tags\": [\"patch\"]}, {\"url\": \"https://metacpan.org/dist/YAML-Syck/changes\", \"tags\": [\"release-notes\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Apply the patch\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Apply the patch\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure\\n\\nMissing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read\\n\\nThe issue is seen with complex YAML files with a hash of all keys and empty values.\\u00a0 There is no indication that the issue leads to accessing memory outside that allocated to the module.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure\u003cbr\u003e\u003cbr\u003eMissing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read\u003cbr\u003e\u003cbr\u003eThe issue is seen with complex YAML files with a hash of all keys and empty values.\u0026nbsp; There is no indication that the issue leads to accessing memory outside that allocated to the module.\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-119\", \"description\": \"CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer\"}]}], \"providerMetadata\": {\"orgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"shortName\": \"CPANSec\", \"dateUpdated\": \"2025-10-16T00:14:41.769Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2025-11683\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-16T13:42:17.584Z\", \"dateReserved\": \"2025-10-13T12:35:07.822Z\", \"assignerOrgId\": \"9b29abf9-4ab0-4765-b253-1875cd9b441e\", \"datePublished\": \"2025-10-16T00:14:41.769Z\", \"assignerShortName\": \"CPANSec\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

FKIE_CVE-2025-11683

Vulnerability from fkie_nvd - Published: 2025-10-16 01:15 - Updated: 2025-10-16 15:28

Severity ?

6.5 (Medium) - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Summary

References

	URL	Tags
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/cpan-authors/YAML-Syck/pull/65
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://metacpan.org/dist/YAML-Syck/changes

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure\n\nMissing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read\n\nThe issue is seen with complex YAML files with a hash of all keys and empty values.\u00a0 There is no indication that the issue leads to accessing memory outside that allocated to the module."
    }
  ],
  "id": "CVE-2025-11683",
  "lastModified": "2025-10-16T15:28:59.610",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-10-16T01:15:32.890",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/cpan-authors/YAML-Syck/pull/65"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/dist/YAML-Syck/changes"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}

GHSA-GR2G-VMXJ-5CV8

Vulnerability from github – Published: 2025-10-16 03:30 – Updated: 2025-10-16 15:30

Details

YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure

Missing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read

The issue is seen with complex YAML files with a hash of all keys and empty values. There is no indication that the issue leads to accessing memory outside that allocated to the module.

Severity ?

6.5 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2025-11683"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-119"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-10-16T01:15:32Z",
    "severity": "MODERATE"
  },
  "details": "YAML::Syck versions before 1.36 for Perl has missing null-terminators which causes out-of-bounds read and potential information disclosure\n\nMissing null terminators in token.c leads to but-of-bounds read which allows adjacent variable to be read\n\nThe issue is seen with complex YAML files with a hash of all keys and empty values.\u00a0 There is no indication that the issue leads to accessing memory outside that allocated to the module.",
  "id": "GHSA-gr2g-vmxj-5cv8",
  "modified": "2025-10-16T15:30:42Z",
  "published": "2025-10-16T03:30:23Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-11683"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cpan-authors/YAML-Syck/pull/65"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/dist/YAML-Syck/changes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

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

CVE-2025-11683 (GCVE-0-2025-11683)

FKIE_CVE-2025-11683

GHSA-GR2G-VMXJ-5CV8

Tags

Sightings

Nomenclature