FKIE_CVE-2026-23741

Vulnerability from fkie_nvd - Published: 2026-02-06 17:16 - Updated: 2026-02-18 18:42
Severity ?
0.0 (None) - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the asterisk/contrib/scripts/ast_coredumper runs as root, as noted by the NOTES tag on line 689 of the ast_coredumper file. The script will source the contents of /etc/asterisk/ast_debug_tools.conf, which resides in a folder that is writeable by the asterisk user:group. Due to the /etc/asterisk/ast_debug_tools.conf file following bash semantics and it being loaded; an attacker with write permissions may add or modify the file such that when the root ast_coredumper is run; it would source and thereby execute arbitrary bash code found in the /etc/asterisk/ast_debug_tools.conf. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2.
References
security-advisories@github.comhttps://github.com/asterisk/asterisk/security/advisories/GHSA-rvch-3jmx-3jf3Vendor Advisory
Impacted products
Vendor Product Version
sangoma asterisk *
sangoma asterisk *
sangoma asterisk *
sangoma asterisk *
sangoma certified_asterisk *
sangoma certified_asterisk 20.7
sangoma certified_asterisk 20.7
sangoma certified_asterisk 20.7
sangoma certified_asterisk 20.7
sangoma certified_asterisk 20.7
sangoma certified_asterisk 20.7
sangoma certified_asterisk 20.7
sangoma certified_asterisk 20.7
sangoma certified_asterisk 20.7
sangoma certified_asterisk 20.7
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{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "46AC3571-DD52-4F3C-98D2-3BB915498D41",
              "versionEndExcluding": "20.18.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B9CB7760-849C-42CB-BF9A-A3DB40F19447",
              "versionEndExcluding": "21.12.1",
              "versionStartIncluding": "21.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "03AEEF8D-B546-4587-A236-63E2C41582FF",
              "versionEndExcluding": "22.8.2",
              "versionStartIncluding": "22.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:asterisk:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "B036D768-9ADA-4965-A596-BEF60749C3CD",
              "versionEndExcluding": "23.2.2",
              "versionStartIncluding": "23.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "44460225-C50D-414A-A2E0-F8280E1C1E1D",
              "versionEndIncluding": "18.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1:*:*:*:*:*:*",
              "matchCriteriaId": "79225576-AF7C-4099-9624-C53578A7417F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1-rc1:*:*:*:*:*:*",
              "matchCriteriaId": "29323E6E-12C9-46C7-B29C-25E0CD537A8E",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:20.7:cert1-rc2:*:*:*:*:*:*",
              "matchCriteriaId": "8E563972-78C0-40A0-83EA-6A3BA3D71946",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:20.7:cert2:*:*:*:*:*:*",
              "matchCriteriaId": "64209621-D458-432A-B0E3-C8D0B6698574",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:20.7:cert3:*:*:*:*:*:*",
              "matchCriteriaId": "B148158A-8354-41C2-A44C-2C0DAABAD217",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:20.7:cert4:*:*:*:*:*:*",
              "matchCriteriaId": "3D4D96E8-1F01-42B8-9181-67DEB12D9DD2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:20.7:cert5:*:*:*:*:*:*",
              "matchCriteriaId": "50D1B02A-F5F9-48EB-A396-412821F5D602",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:20.7:cert6:*:*:*:*:*:*",
              "matchCriteriaId": "4CBB2891-448F-4C4E-8A47-2283A8F71FE6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:20.7:cert7:*:*:*:*:*:*",
              "matchCriteriaId": "A9AF30E9-FC50-4A5C-BC99-9B3394488B9D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:sangoma:certified_asterisk:20.7:cert8:*:*:*:*:*:*",
              "matchCriteriaId": "1A41366F-EA16-4867-A198-ACFFE5AFEA9A",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Asterisk is an open source private branch exchange and telephony toolkit. Prior to versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2, the asterisk/contrib/scripts/ast_coredumper runs as root, as noted by the NOTES tag on line 689 of the ast_coredumper file. The script will source the contents of /etc/asterisk/ast_debug_tools.conf, which resides in a folder that is writeable by the asterisk user:group. Due to the /etc/asterisk/ast_debug_tools.conf file following bash semantics and it being loaded; an attacker with write permissions may add or modify the file such that when the root ast_coredumper is run; it would source and thereby execute arbitrary bash code found in the /etc/asterisk/ast_debug_tools.conf. This issue has been patched in versions 20.7-cert9, 20.18.2, 21.12.1, 22.8.2, and 23.2.2."
    }
  ],
  "id": "CVE-2026-23741",
  "lastModified": "2026-02-18T18:42:31.550",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "NONE",
          "baseScore": 0.0,
          "baseSeverity": "NONE",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 0.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-02-06T17:16:26.427",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-rvch-3jmx-3jf3"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-427"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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Detection rules are retrieved from Rulezet.