CVE-2025-47780 (GCVE-0-2025-47780)

Vulnerability from cvelistv5 – Published: 2025-05-22 16:56 – Updated: 2025-11-03 20:04
VLAI
Title
cli_permissions.conf: deny option does not work for disallowing shell commands
Summary
Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk, trying to disallow shell commands to be run via the Asterisk command line interface (CLI) by configuring `cli_permissions.conf` (e.g. with the config line `deny=!*`) does not work which could lead to a security risk. If an administrator running an Asterisk instance relies on the `cli_permissions.conf` file to work and expects it to deny all attempts to execute shell commands, then this could lead to a security vulnerability. Versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk fix the issue.
Severity
4.8 (Medium)
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-22 17:24 UTC
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7658 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
asterisk asterisk Affected: < 18.9-cert14
Affected: >= 18.10, < 18.26.2
Affected: >= 20.0, < 20.7-cert5
Affected: >= 20.8, < 20.14.1
Affected: >= 21.0, < 21.9.1
Affected: >= 22.0, < 22.4.1
guessed Create a notification for this product.
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      "status": "final",
      "title": "asterisk: cli_permissions.conf: deny option does not work for disallowing shell commands",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-47780.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2025-11-03T20:04:38.254Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://lists.debian.org/debian-lts-announce/2025/06/msg00003.html"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2025-47780",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2025-05-22T17:24:44.875844Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2025-05-22T17:24:58.085Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "asterisk",
              "vendor": "asterisk",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 18.9-cert14"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 18.10, \u003c 18.26.2"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 20.0, \u003c 20.7-cert5"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 20.8, \u003c 20.14.1"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 21.0, \u003c 21.9.1"
                },
                {
                  "status": "affected",
                  "version": "\u003e= 22.0, \u003c 22.4.1"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "Asterisk is an open-source private branch exchange (PBX). Prior to versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk, trying to disallow shell commands to be run via the Asterisk command line interface (CLI) by configuring `cli_permissions.conf` (e.g. with the config line `deny=!*`) does not work which could lead to a security risk. If an administrator running an Asterisk instance relies on the `cli_permissions.conf` file to work and expects it to deny all attempts to execute shell commands, then this could lead to a security vulnerability. Versions 18.26.2, 20.14.1, 21.9.1, and 22.4.1 of Asterisk and versions 18.9-cert14 and 20.7-cert5 of certified-asterisk fix the issue."
            }
          ],
          "metrics": [
            {
              "cvssV4_0": {
                "attackComplexity": "LOW",
                "attackRequirements": "NONE",
                "attackVector": "LOCAL",
                "baseScore": 4.8,
                "baseSeverity": "MEDIUM",
                "privilegesRequired": "LOW",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N",
                "version": "4.0",
                "vulnAvailabilityImpact": "LOW",
                "vulnConfidentialityImpact": "LOW",
                "vulnIntegrityImpact": "LOW"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-78",
                  "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2025-05-22T16:56:28.937Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/asterisk/asterisk/security/advisories/GHSA-c7p6-7mvq-8jq2",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-c7p6-7mvq-8jq2"
            }
          ],
          "source": {
            "advisory": "GHSA-c7p6-7mvq-8jq2",
            "discovery": "UNKNOWN"
          },
          "title": "cli_permissions.conf: deny option does not work for disallowing shell commands"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2025-47780",
        "datePublished": "2025-05-22T16:56:28.937Z",
        "dateReserved": "2025-05-09T19:49:35.620Z",
        "dateUpdated": "2025-11-03T20:04:38.254Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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