Security advisory

{
  "id": "93c621e21efd5032fe8433fe29164e08532e9cab842a31c2247d7a90fc6436ab",
  "url": "https://osv.dev/vulnerability/CVE-2018-20459",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-20459",
    "summary": "In radare2 through 3.1.3, the armass_assemble function in libr/asm/arch/arm/armass.c allows attackers to cause a denial-of-service (application crash by out-of-bounds read) by crafting an arm assembly input because a loop uses an incorrect index in armass.c and certain length validation is missing in armass64.c, a related issue to CVE-2018-20457.",
    "evidence": "osv:CVE-2018-20459",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2018-20459",
      "aliases": [
        "CVE-2018-20459"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/radareorg/radare2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "57dd0b4e7ec70cc95f859651b1b63b076b8df7a7"
                },
                {
                  "fixed": "e5c14c167b0dcf0a53d76bd50bacbbcc0dfc1ae7"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:radare:radare2:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.1.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "e5c14c167b0dcf0a53d76bd50bacbbcc0dfc1ae7"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.1.3",
            "3.1.2",
            "3.1.1",
            "3.1.0",
            "3.0.1",
            "3.0.0",
            "2.9.0",
            "2.8.0",
            "2.7.0",
            "2.6.9",
            "2.6.0",
            "2.5.0",
            "2.4.0",
            "2.2.0",
            "2.1.0",
            "2.0.1",
            "2.0.0",
            "1.6.0",
            "1.5.0",
            "1.4.0",
            "1.3.0",
            "1.3.0-git",
            "1.2.0",
            "1.2.0-git",
            "1.1.0",
            "1.0.2",
            "1.0.1",
            "1.0.0",
            "1.0",
            "0.10.6",
            "0.10.5",
            "0.10.4-termux4",
            "termux",
            "0.10.4",
            "0.10.3",
            "0.10.2",
            "0.10.1",
            "0.10.0",
            "radare2-windows-nightly",
            "0.9.9",
            "0.9.8",
            "0.9.8-rc4",
            "0.9.8-rc3",
            "0.9.8-rc2",
            "0.9.8-rc1",
            "0.9.7",
            "0.9.6",
            "0.9.4",
            "0.9.2",
            "0.9",
            "0.8.8",
            "0.8.6"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-20459.json",
            "vanir_signatures": [
              {
                "id": "CVE-2018-20459-65313591",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "234972124300723021303519189872586181159",
                    "64855739719150176419708370774937598661",
                    "126982576917966750042234182581912397903",
                    "2465101767988780529990207923766591025"
                  ]
                },
                "source": "https://github.com/radareorg/radare2/commit/e5c14c167b0dcf0a53d76bd50bacbbcc0dfc1ae7",
                "target": {
                  "file": "libr/asm/arch/arm/armass64.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-20459-81cc582b",
                "digest": {
                  "threshold": 0.9,
                  "line_hashes": [
                    "320504459856674577202378585621657567447",
                    "241052845637009396674950399335434319279",
                    "92424657880786021492995607119010819530",
                    "217390376035072865716445880018909325770"
                  ]
                },
                "source": "https://github.com/radareorg/radare2/commit/e5c14c167b0dcf0a53d76bd50bacbbcc0dfc1ae7",
                "target": {
                  "file": "libr/asm/arch/arm/armass.c"
                },
                "deprecated": false,
                "signature_type": "Line",
                "signature_version": "v1"
              },
              {
                "id": "CVE-2018-20459-84106391",
                "digest": {
                  "length": 3280,
                  "function_hash": "159900584179997407881165760870783466648"
                },
                "source": "https://github.com/radareorg/radare2/commit/e5c14c167b0dcf0a53d76bd50bacbbcc0dfc1ae7",
                "target": {
                  "file": "libr/asm/arch/arm/armass64.c",
                  "function": "parseOperands"
                },
                "deprecated": false,
                "signature_type": "Function",
                "signature_version": "v1"
              }
            ],
            "vanir_signatures_modified": "2026-10-20T13:37:40Z"
          }
        }
      ],
      "modified": "2026-10-20T13:37:40.447485543Z",
      "provider": "osv",
      "references": [
        "https://github.com/radare/radare2/issues/12418",
        "https://github.com/radareorg/radare2/commit/e5c14c167b0dcf0a53d76bd50bacbbcc0dfc1ae7"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-20459",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 387900,
  "published_at": "2018-12-25T19:29:00.477+00:00"
}