FKIE_CVE-2026-58101

Vulnerability from fkie_nvd - Published: 2026-07-13 23:16 - Updated: 2026-07-13 23:16
Severity
Summary
Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference. X509V3_EXT_d2i(ext) returns NULL when an extension's DER value fails to parse. basicC, ia5string, and auth_att dereference its result without a NULL check. keyid_data also dereferences akid->keyid, which is NULL for an empty AKI SEQUENCE (DER 30 00) even when the parse succeeds. A caller invoking an affected helper on an extension from an untrusted certificate triggers a SIGSEGV that crashes the Perl process.
References
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://github.com/dsully/perl-crypt-openssl-x509/commit/4c1e2370556097c253ae27abe9e1097ea377fbd2.patch
9b29abf9-4ab0-4765-b253-1875cd9b441ehttps://metacpan.org/release/JONASBN/Crypt-OpenSSL-X509-2.1.3/source/Changes.md
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "packageName": "Crypt-OpenSSL-X509",
          "product": "Crypt::OpenSSL::X509",
          "programFiles": [
            "X509.xs"
          ],
          "programRoutines": [
            {
              "name": "Crypt::OpenSSL::X509::Extension::basicC"
            },
            {
              "name": "Crypt::OpenSSL::X509::Extension::ia5string"
            },
            {
              "name": "Crypt::OpenSSL::X509::Extension::auth_att"
            },
            {
              "name": "Crypt::OpenSSL::X509::Extension::keyid_data"
            }
          ],
          "repo": "https://github.com/dsully/perl-crypt-openssl-x509",
          "vendor": "JONASBN",
          "versions": [
            {
              "lessThan": "2.1.3",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Crypt::OpenSSL::X509 versions before 2.1.3 for Perl allow denial of service via NULL pointer dereference.\n\nX509V3_EXT_d2i(ext) returns NULL when an extension\u0027s DER value fails to parse. basicC, ia5string, and auth_att dereference its result without a NULL check. keyid_data also dereferences akid-\u003ekeyid, which is NULL for an empty AKI SEQUENCE (DER 30 00) even when the parse succeeds.\n\nA caller invoking an affected helper on an extension from an untrusted certificate triggers a SIGSEGV that crashes the Perl process."
    }
  ],
  "id": "CVE-2026-58101",
  "lastModified": "2026-07-13T23:16:47.020",
  "metrics": {},
  "published": "2026-07-13T23:16:47.020",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/dsully/perl-crypt-openssl-x509/commit/4c1e2370556097c253ae27abe9e1097ea377fbd2.patch"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/JONASBN/Crypt-OpenSSL-X509-2.1.3/source/Changes.md"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}



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