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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2016-7053

In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2016-7053
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 04:34 UTC · Revision 1

Source evidence

CVE-2016-7053

core-osv · Original source

Published 4 May 2017, 19:29 UTC

In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected.

osv:CVE-2016-7053
Complete source record
{
  "id": "c9f5e7a0509394e15e330aee4c8201556f6b3661734d3c28d6e1d4e900064a0d",
  "url": "https://osv.dev/vulnerability/CVE-2016-7053",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-7053",
    "summary": "In OpenSSL 1.1.0 before 1.1.0c, applications parsing invalid CMS structures can crash with a NULL pointer dereference. This is caused by a bug in the handling of the ASN.1 CHOICE type in OpenSSL 1.1.0 which can result in a NULL value being passed to the structure callback if an attempt is made to free certain invalid encodings. Only CHOICE structures using a callback which do not handle NULL value are affected.",
    "evidence": "osv:CVE-2016-7053",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2016-7053",
      "aliases": [
        "CVE-2016-7053"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/openssl/openssl",
              "type": "GIT",
              "events": [
                {
                  "introduced": "7ea5bd2b52d0e81eaef3d109b3b12545306f201c"
                },
                {
                  "last_affected": "7ea5bd2b52d0e81eaef3d109b3b12545306f201c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:openssl:openssl:1.1.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.1.0"
                      },
                      {
                        "last_affected": "1.1.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:openssl:openssl:1.1.0a:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.1.0a"
                      },
                      {
                        "last_affected": "1.1.0a"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:openssl:openssl:1.1.0b:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.1.0b"
                      },
                      {
                        "last_affected": "1.1.0b"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.1.0",
            "OpenSSL_1_1_0l"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-7053.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:20.257811111Z",
      "provider": "osv",
      "references": [
        "https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03744en_us",
        "https://www.openssl.org/news/secadv/20161110.txt"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2016-7053",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430227,
  "published_at": "2017-05-04T19:29:00.213+00:00"
}