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CVE-2023-0401

Estado: ModificadaAlta (7.5)—

A NULL pointer can be dereferenced when signatures are being verified on PKCS7 signed or signedAndEnveloped data. In case the hash algorithm used for the signature is known to the OpenSSL library but the implementation of the hash algorithm is not available the digest initialization will fail. There is a missing check for the return value from the initialization function which later leads to invalid usage of the digest API most likely leading to a crash.

The unavailability of an algorithm can be caused by using FIPS enabled configuration of providers or more commonly by not loading the legacy provider.

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PKCS7 data is processed by the SMIME library calls and also by the time stamp (TS) library calls. The TLS implementation in OpenSSL does not call these functions however third party applications would be affected if they call these functions to verify signatures on untrusted data.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

Openssl — OpensslStormshield — Stormshield Management Center

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2023-0401",
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          "options": [
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              "exploitation": "none"
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              "automatable": "yes"
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              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2025-04-23T13:26:52.071727Z"
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          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
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      "value": "A NULL pointer can be dereferenced when signatures are being\nverified on PKCS7 signed or signedAndEnveloped data. In case the hash\nalgorithm used for the signature is known to the OpenSSL library but\nthe implementation of the hash algorithm is not available the digest\ninitialization will fail. There is a missing check for the return\nvalue from the initialization function which later leads to invalid\nusage of the digest API most likely leading to a crash.\n\nThe unavailability of an algorithm can be caused by using FIPS\nenabled configuration of providers or more commonly by not loading\nthe legacy provider.\n\nPKCS7 data is processed by the SMIME library calls and also by the\ntime stamp (TS) library calls. The TLS implementation in OpenSSL does\nnot call these functions however third party applications would be\naffected if they call these functions to verify signatures on untrusted\ndata."
    }
  ],
  "lastModified": "2026-06-17T05:25:27.210",
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