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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2016-7798

The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2016-7798
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 12:09 UTC · Revision 1

Source evidence

CVE-2016-7798

core-osv · Original source

Published 30 Jan 2017, 22:59 UTC

The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism.

osv:CVE-2016-7798
Complete source record
{
  "id": "c205cfa2056ed7bcf71c10ce1b8172547fb23bc48c5dac4804584eef5cec938b",
  "url": "https://osv.dev/vulnerability/CVE-2016-7798",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-7798",
    "summary": "The openssl gem for Ruby uses the same initialization vector (IV) in GCM Mode (aes-*-gcm) when the IV is set before the key, which makes it easier for context-dependent attackers to bypass the encryption protection mechanism.",
    "evidence": "osv:CVE-2016-7798",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2016-7798",
      "aliases": [
        "CVE-2016-7798",
        "GHSA-6h88-qjpv-p32m"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
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          "ranges": [
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              "type": "GIT",
              "events": [
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                {
                  "fixed": "4ff95439d0b13aac7b9b2e3674f0a6662c715ec6"
                },
                {
                  "fixed": "8108e0a6db133f3375608303fdd2083eb5115062"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:ruby-lang:openssl:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "8108e0a6db133f3375608303fdd2083eb5115062"
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                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.0.0.beta.2",
            "v2.0.0.beta.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-7798.json",
            "vanir_signatures": [
              {
                "id": "CVE-2016-7798-0273a448",
                "digest": {
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                  "function_hash": "18836833283231560844724073730829986290"
                },
                "source": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062",
                "target": {
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                  "function": "ossl_cipher_initialize"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
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                "id": "CVE-2016-7798-3f0883d4",
                "digest": {
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                },
                "source": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062",
                "target": {
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                  "function": "Init_ossl_cipher"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2016-7798-3f753bcc",
                "digest": {
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                  "function_hash": "97745084328378698433793456802924644289"
                },
                "source": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062",
                "target": {
                  "file": "ext/openssl/ossl_cipher.c",
                  "function": "ossl_cipher_pkcs5_keyivgen"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2016-7798-6f8c10c2",
                "digest": {
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                  "function_hash": "24065403867100165975165287948377577072"
                },
                "source": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062",
                "target": {
                  "file": "ext/openssl/ossl_cipher.c",
                  "function": "ossl_cipher_update"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2016-7798-86ad5f31",
                "digest": {
                  "length": 1205,
                  "function_hash": "134827275998405474457279400591891368564"
                },
                "source": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062",
                "target": {
                  "file": "ext/openssl/ossl_cipher.c",
                  "function": "ossl_cipher_init"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2016-7798-b4b5714f",
                "digest": {
                  "threshold": 0.9,
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                  ]
                },
                "source": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062",
                "target": {
                  "file": "ext/openssl/ossl_cipher.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2016-7798-d7100c6b",
                "digest": {
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                  "function_hash": "329745586785318989411528529045439739679"
                },
                "source": "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062",
                "target": {
                  "file": "ext/openssl/ossl_cipher.c",
                  "function": "ossl_cipher_set_key"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:13:21Z"
          }
        }
      ],
      "modified": "2026-10-20T13:13:21.888428933Z",
      "provider": "osv",
      "references": [
        "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html",
        "https://www.debian.org/security/2017/dsa-3966",
        "https://github.com/ruby/openssl/commit/8108e0a6db133f3375608303fdd2083eb5115062",
        "https://github.com/ruby/openssl/issues/49"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "vendor_product": "debian:debian_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "8.0"
                  },
                  {
                    "last_affected": "8.0"
                  },
                  {
                    "introduced": "9.0"
                  },
                  {
                    "last_affected": "9.0"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2016-7798",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387323,
  "published_at": "2017-01-30T22:59:00.747+00:00"
}