Vulnerability-Lookup

UBUNTU-CVE-2024-42365 (CVE-2024-42365)

Vulnerability from osv_ubuntu – Published: 2024-08-08 17:15 – Updated: 2026-05-20 15:11 – Source website

Details

Asterisk is an open source private branch exchange (PBX) and telephony toolkit. Prior to asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2, an AMI user with write=originate may change all configuration files in the /etc/asterisk/ directory. This occurs because they are able to curl remote files and write them to disk, but are also able to append to existing files using the FILE function inside the SET application. This issue may result in privilege escalation, remote code execution and/or blind server-side request forgery with arbitrary protocol. Asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2 contain a fix for this issue.

Severity

7.4 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

8.8 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2024-42365	REPORT
	https://www.cve.org/CVERecord?id=CVE-2024-42365	REPORT
	https://github.com/asterisk/asterisk/security/adv…	REPORT
	https://github.com/asterisk/asterisk/commit/b4063…	REPORT
	https://github.com/asterisk/asterisk/commit/bbe68…	REPORT
	https://github.com/asterisk/asterisk/commit/faddd…	REPORT
	https://github.com/asterisk/asterisk/commit/42a2f…	REPORT
	https://github.com/asterisk/asterisk/commit/7a009…	REPORT
	https://github.com/asterisk/asterisk/commit/b4063…	REPORT
	https://github.com/asterisk/asterisk/commit/bbe68…	REPORT
	https://github.com/asterisk/asterisk/commit/faddd…	REPORT
	https://github.com/asterisk/asterisk/blob/14367ca…	REPORT
	https://github.com/asterisk/asterisk/blob/7d28165…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "asterisk",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
          },
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            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
          },
          {
            "binary_name": "asterisk-dahdi",
            "binary_version": "1:13.1.0~dfsg-1.1ubuntu4.1+esm1"
          },
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          },
          {
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          },
          {
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          },
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          },
          {
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          },
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            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
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            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
          },
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            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
          },
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            "binary_version": "1:22.5.2~dfsg+~cs6.15.60671435-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:26.04:LTS",
        "name": "asterisk",
        "purl": "pkg:deb/ubuntu/asterisk@1:22.5.2~dfsg+~cs6.15.60671435-1?arch=source\u0026distro=resolute"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1:22.5.2~dfsg+~cs6.15.60671435-1"
      ]
    }
  ],
  "aliases": [],
  "details": "Asterisk is an open source private branch exchange (PBX) and telephony toolkit. Prior to asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2, an AMI user with `write=originate` may change all configuration files in the `/etc/asterisk/` directory. This occurs because they are able to curl remote files and write them to disk, but are also able to append to existing files using the `FILE` function inside the `SET` application. This issue may result in privilege escalation, remote code execution and/or blind server-side request forgery with arbitrary protocol. Asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2 contain a fix for this issue.",
  "id": "UBUNTU-CVE-2024-42365",
  "modified": "2026-05-20T15:11:31Z",
  "published": "2024-08-08T17:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-42365"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-42365"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/security/advisories/GHSA-c4cg-9275-6w44"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/commit/b4063bf756272254b160b6d1bd6e9a3f8e16cc71"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/commit/bbe68db10ab8a80c29db383e4dfe14f6eafaf993"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/commit/faddd99f2b9408b524e5eb8a01589fe1fa282df2"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/commit/42a2f4ccfa2c7062a15063e765916b3332e34cc4"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/commit/b4063bf756272254b160b6d1bd6e9a3f8e16cc71"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/commit/bbe68db10ab8a80c29db383e4dfe14f6eafaf993"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/commit/faddd99f2b9408b524e5eb8a01589fe1fa282df2"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/blob/14367caaf7241df1eceea7c45c5b261989c2c6db/main/manager.c#L6426"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/asterisk/asterisk/blob/7d28165cb1b2d02d66e8693bd3fe23ee72fc55d8/main/manager.c#L6426"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2024-42365"
  ]
}

CVE-2024-42365 (GCVE-0-2024-42365)

Vulnerability from cvelistv5 – Published: 2024-08-08 16:29 – Updated: 2025-11-03 22:04

Title

Asterisk allows `Write=originate` as sufficient permissions for code execution / `System()` dialplan

Summary

Asterisk is an open source private branch exchange (PBX) and telephony toolkit. Prior to asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2, an AMI user with `write=originate` may change all configuration files in the `/etc/asterisk/` directory. This occurs because they are able to curl remote files and write them to disk, but are also able to append to existing files using the `FILE` function inside the `SET` application. This issue may result in privilege escalation, remote code execution and/or blind server-side request forgery with arbitrary protocol. Asterisk versions 18.24.2, 20.9.2, and 21.4.2 and certified-asterisk versions 18.9-cert11 and 20.7-cert2 contain a fix for this issue.

Severity

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-08 16:38 UTC

CWE

CWE-267 - Privilege Defined With Unsafe Actions
CWE-1220 - Insufficient Granularity of Access Control

Assigner

GitHub_M mitre root

References

9 references

URL	Tags
https://github.com/asterisk/asterisk/security/adv…	x_refsource_CONFIRM
https://github.com/asterisk/asterisk/commit/42a2f…	x_refsource_MISC
https://github.com/asterisk/asterisk/commit/7a009…	x_refsource_MISC
https://github.com/asterisk/asterisk/commit/b4063…	x_refsource_MISC
https://github.com/asterisk/asterisk/commit/bbe68…	x_refsource_MISC
https://github.com/asterisk/asterisk/commit/faddd…	x_refsource_MISC
https://github.com/asterisk/asterisk/blob/14367ca…	x_refsource_MISC
https://github.com/asterisk/asterisk/blob/7d28165…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

3 products

Vendor	Product	Version
asterisk	asterisk	Affected: < 18.24.2 Affected: >= 19.0.0, < 20.9.2 Affected: >= 21.0.0, < 21.4.2 Affected: < 18.9-cert11 Affected: >= 19.0, < 20.7-cert2
asterisk	certified_asterisk	Affected: 0 , < 18.9-cert11 (custom) Affected: 19.0 , < 20.7-cert2 (custom) cpe:2.3:a:asterisk:certified_asterisk::::::::
asterisk	asterisk	Affected: 0 , < 18.24.2 (custom) Affected: 19.0.0 , < 20.9.2 (custom) Affected: 21.0.0 , < 21.4.2 (custom) cpe:2.3:a:asterisk:asterisk::::::::

Show details on NVD website

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To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:asterisk:certified_asterisk:*:*:*:*:*:*:*:*"
            ],
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                "version": "0",
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                "status": "affected",
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            ]
          },
          {
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              "cpe:2.3:a:asterisk:asterisk:*:*:*:*:*:*:*:*"
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        "metrics": [
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              "content": {
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                "options": [
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                    "Exploitation": "poc"
                  },
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                    "Automatable": "no"
                  },
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                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
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          "dateUpdated": "2024-08-12T15:49:00.190Z",
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            {
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              "version": "\u003c 18.24.2"
            },
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            },
            {
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              "version": "\u003e= 21.0.0, \u003c 21.4.2"
            },
            {
              "status": "affected",
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            },
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            }
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      ],
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          "lang": "en",
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        }
      ],
      "metrics": [
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          "cvssV3_1": {
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            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L",
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            "x_refsource_MISC"
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          "url": "https://github.com/asterisk/asterisk/commit/7a0090325bfa9d778a39ae5f7d0a98109e4651c8"
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        {
          "name": "https://github.com/asterisk/asterisk/commit/b4063bf756272254b160b6d1bd6e9a3f8e16cc71",
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            "x_refsource_MISC"
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        },
        {
          "name": "https://github.com/asterisk/asterisk/commit/bbe68db10ab8a80c29db383e4dfe14f6eafaf993",
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        },
        {
          "name": "https://github.com/asterisk/asterisk/blob/14367caaf7241df1eceea7c45c5b261989c2c6db/main/manager.c#L6426",
          "tags": [
            "x_refsource_MISC"
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          "url": "https://github.com/asterisk/asterisk/blob/14367caaf7241df1eceea7c45c5b261989c2c6db/main/manager.c#L6426"
        },
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        }
      ],
      "source": {
        "advisory": "GHSA-c4cg-9275-6w44",
        "discovery": "UNKNOWN"
      },
      "title": "Asterisk allows `Write=originate` as sufficient permissions for code execution / `System()` dialplan"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
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    "dateReserved": "2024-07-30T14:01:33.923Z",
    "dateUpdated": "2025-11-03T22:04:48.935Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.