CVE-2026-57203 (GCVE-0-2026-57203)
Vulnerability from cvelistv5
Published
2026-10-27 21:48
Modified
2026-10-27 21:48
Severity ?
6.9 (Medium) - CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CWE
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, `ast_loggrabber` executes a `Python script` from the world-writable `/tmp` directory. An attacker already authorized to open a shell session on the Asterisk server may place a malicious script there and gain elevated privileges or execute code when an administrator runs `ast_loggrabber` as a user with elevated privileges. 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, `ast_loggrabber` executes a `Python script` from the world-writable `/tmp` directory. An attacker already authorized to open a shell session on the Asterisk server may place a malicious script there and gain elevated privileges or execute code when an administrator runs `ast_loggrabber` as a user with elevated privileges. 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": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "LOCAL",
            "baseScore": 6.9,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-426",
              "description": "CWE-426: Untrusted Search Path",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-27T21:48:40.078Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/asterisk/asterisk/security/advisories/GHSA-xgj6-2gc5-5x9c",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-xgj6-2gc5-5x9c"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/022407ec47adebe27b7ec8bcf5626e5a02fe1551",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/022407ec47adebe27b7ec8bcf5626e5a02fe1551"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/a51c4e3d6bccce4bc4226c43e78952573a62f165",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/a51c4e3d6bccce4bc4226c43e78952573a62f165"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/ba8e5bdecd5280fc0ab230df59e41ea21b3a052f",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/ba8e5bdecd5280fc0ab230df59e41ea21b3a052f"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/bd63fe121d0e86867863bd98b5771e592273b035",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/bd63fe121d0e86867863bd98b5771e592273b035"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/c0fc2ae54cb6289a48a80333432f5fdf5a40c7de",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/c0fc2ae54cb6289a48a80333432f5fdf5a40c7de"
        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/f18ac4c964781f671e400342790bf40679698067",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/asterisk/asterisk/commit/f18ac4c964781f671e400342790bf40679698067"
        },
        {
          "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-xgj6-2gc5-5x9c",
        "discovery": "UNKNOWN"
      },
      "title": "Asterisk: Local privilege escalation through ast_loggrabber\u0027s world-writable helper location"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-57203",
    "datePublished": "2026-10-27T21:48:40.078Z",
    "dateReserved": "2026-06-24T02:00:46.801Z",
    "dateUpdated": "2026-10-27T21:48:40.078Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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