Security advisory

{
  "id": "2a1f46f5d763a9d0134ef8f2428749004b96f72c6940ace042f4d74f69d3788a",
  "url": "https://osv.dev/vulnerability/CVE-2016-1000338",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2016-1000338",
    "summary": "In Bouncy Castle JCE Provider version 1.55 and earlier the DSA does not fully validate ASN.1 encoding of signature on verification. It is possible to inject extra elements in the sequence making up the signature and still have it validate, which in some cases may allow the introduction of 'invisible' data into a signed structure.",
    "evidence": "osv:CVE-2016-1000338",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2016-1000338",
      "aliases": [
        "CVE-2016-1000338",
        "GHSA-4vhj-98r6-424h"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bcgit/bc-java",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "996763c72e128cd677fcd97d3fa74beb2c12124b"
                },
                {
                  "fixed": "b0c3ce99d43d73a096268831d0d120ffc89eac7f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:bouncycastle:legion-of-the-bouncy-castle-java-crytography-api:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.38"
                      },
                      {
                        "fixed": "1.56"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "b0c3ce99d43d73a096268831d0d120ffc89eac7f"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "r1rv55",
            "r1rv54",
            "r1rv53",
            "r1rv52",
            "r1rv51",
            "r1rv50",
            "r1rv49"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-1000338.json",
            "vanir_signatures": [
              {
                "id": "CVE-2016-1000338-087c7fa8",
                "digest": {
                  "length": 2322,
                  "function_hash": "260934301005839087771033825261480613861"
                },
                "source": "https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f",
                "target": {
                  "file": "prov/src/test/java/org/bouncycastle/jce/provider/test/DSATest.java",
                  "function": "performTest"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2016-1000338-7c04278f",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "136163138208565596251691075970191609612",
                    "107562756255838380340501290306204437774",
                    "256405273294590351025306411110688622024",
                    "321391742634389090900092687248037489853",
                    "6668448620659695156447218389951777055",
                    "114414081459311079942728053419609401083",
                    "224667266301163910456003187272837519895",
                    "332764780958810242807759347728695018005",
                    "2754744943816587054499795256365031272",
                    "54339207175021658509884097720332228201",
                    "260804928531546614162744774821933798241",
                    "78059865186365016316398972156821482959",
                    "197034695221731228794406326079488881854"
                  ]
                },
                "source": "https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f",
                "target": {
                  "file": "prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/dsa/DSASigner.java"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2016-1000338-9c489c5a",
                "digest": {
                  "length": 237,
                  "function_hash": "62843566931630879095861907111734894785"
                },
                "source": "https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f",
                "target": {
                  "file": "prov/src/main/java/org/bouncycastle/jcajce/provider/asymmetric/dsa/DSASigner.java",
                  "function": "derDecode"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2016-1000338-d475fda9",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "27619101407773283894022340957986395790",
                    "53925406762360604861398560861262849999",
                    "216990679076247254168542336595971957581",
                    "14297879978164554187003311429379829455",
                    "11867573160650489211141619707597149843",
                    "207007376803811096500197258371319649111",
                    "312819499243767890488137211355596467932"
                  ]
                },
                "source": "https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f",
                "target": {
                  "file": "prov/src/test/java/org/bouncycastle/jce/provider/test/DSATest.java"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:13:35Z"
          }
        }
      ],
      "modified": "2026-10-20T13:13:35.832819791Z",
      "provider": "osv",
      "references": [
        "https://access.redhat.com/errata/RHSA-2018:2669",
        "https://access.redhat.com/errata/RHSA-2018:2927",
        "https://lists.apache.org/thread.html/708d94141126eac03011144a971a6411fcac16d9c248d1d535a39451%40%3Csolr-user.lucene.apache.org%3E",
        "https://lists.debian.org/debian-lts-announce/2018/07/msg00009.html",
        "https://security.netapp.com/advisory/ntap-20231006-0011/",
        "https://usn.ubuntu.com/3727-1/",
        "https://www.oracle.com/security-alerts/cpuoct2020.html",
        "https://github.com/bcgit/bc-java/commit/b0c3ce99d43d73a096268831d0d120ffc89eac7f#diff-3679f5a9d2b939d0d3ee1601a7774fb0"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:*:*:*:*"
            ],
            "vendor_product": "canonical:ubuntu_linux",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "14.04"
                  },
                  {
                    "last_affected": "14.04"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:redhat:satellite:6.4:-:*:*:*:*:*:*"
            ],
            "vendor_product": "redhat:satellite",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "6.4-NA"
                  },
                  {
                    "last_affected": "6.4-NA"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          },
          {
            "cpes": [
              "cpe:2.3:a:redhat:satellite_capsule:6.4:*:*:*:*:*:*:*"
            ],
            "vendor_product": "redhat:satellite_capsule",
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "6.4"
                  },
                  {
                    "last_affected": "6.4"
                  }
                ],
                "source": "CPE_STRING"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2016-1000338",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387344,
  "published_at": "2018-06-01T20:29:00.217+00:00"
}