CVE-2026-57195 (GCVE-0-2026-57195)
Vulnerability from cvelistv5
Published
2026-10-27 21:04
Modified
2026-10-27 21:04
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-476 - NULL Pointer Dereference
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, a NULL pointer dereference in the `Asterisk Manager Interface (AMI)` may allow an unauthenticated attacker to crash Asterisk when `Digest Authentication` is used via `HTTP`. The Asterisk `HTTP` web server, AMI, and AMI access via `HTTP` must all be enabled; each is disabled by default. The attacker must be able to connect to the `HTTP` server, which binds only to `127.0.0.1` by default even when enabled. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.
References
Impacted products
Vendor Product Version
asterisk asterisk Version: < 20.20.1
Version: >= 21.0.0-pre1, < 21.12.3
Version: >= 22.0.0-pre1, < 22.10.1
Version: >= 23.0.0-pre1, < 23.4.1
 Create a notification for this product.
   asterisk certified-asterisk Version: < 20.7-cert11
Version: >= 22.8-cert1-pre1, < 22.8-cert3
 Create a notification for this product.
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "asterisk",
          "vendor": "asterisk",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 20.20.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 21.0.0-pre1, \u003c 21.12.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 22.0.0-pre1, \u003c 22.10.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 23.0.0-pre1, \u003c 23.4.1"
            }
          ]
        },
        {
          "product": "certified-asterisk",
          "vendor": "asterisk",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 20.7-cert11"
            },
            {
              "status": "affected",
              "version": "\u003e= 22.8-cert1-pre1, \u003c 22.8-cert3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, a NULL pointer dereference in the `Asterisk Manager Interface (AMI)` may allow an unauthenticated attacker to crash Asterisk when `Digest Authentication` is used via `HTTP`. The Asterisk `HTTP` web server, AMI, and AMI access via `HTTP` must all be enabled; each is disabled by default. The attacker must be able to connect to the `HTTP` server, which binds only to `127.0.0.1` by default even when enabled. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-476",
              "description": "CWE-476: NULL Pointer Dereference",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-27T21:04:25.747Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/asterisk/asterisk/security/advisories/GHSA-3rhj-hhw7-m6fw",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-3rhj-hhw7-m6fw"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/10c5b2efcacab03bf04a229f81cc24e76fe42c41",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/10c5b2efcacab03bf04a229f81cc24e76fe42c41"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/362ef847e7e057b7626e476ddcfe7328ea314db4",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/362ef847e7e057b7626e476ddcfe7328ea314db4"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/5d5d8d8ef7f16774820b1889ae73d8d2ab14af45",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/5d5d8d8ef7f16774820b1889ae73d8d2ab14af45"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/87a1f43e4c465b885163665aa89172ed0f392663",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/87a1f43e4c465b885163665aa89172ed0f392663"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/a1fcfdf9b91ed58cc8fb9da8d135da60bae7345d",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/a1fcfdf9b91ed58cc8fb9da8d135da60bae7345d"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/abba42c58fee2226a709583afdbeec75cf1dde8b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/abba42c58fee2226a709583afdbeec75cf1dde8b"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/fff89162cdd702e8a143701f138edd8dceab154f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/fff89162cdd702e8a143701f138edd8dceab154f"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/20.20.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/20.20.1"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/21.12.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/21.12.3"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/22.10.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/22.10.1"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/23.4.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/23.4.1"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/certified-20.7-cert11"
        },
        {
          "name": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/releases/tag/certified-22.8-cert3"
        },
        {
          "name": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/tree/24.0.0-pre1"
        }
      ],
      "source": {
        "advisory": "GHSA-3rhj-hhw7-m6fw",
        "discovery": "UNKNOWN"
      },
      "title": "Asterisk: NULL Pointer Dereference in HTTP AMI Digest Authentication"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-57195",
    "datePublished": "2026-10-27T21:04:25.747Z",
    "dateReserved": "2026-06-24T02:00:46.800Z",
    "dateUpdated": "2026-10-27T21:04:25.747Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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