Vulnerability from bitnami_vulndb
Published
2024-03-06 10:51
Modified
2026-09-08 08:34
Summary
Remote Code Execution via web-accessible composer.phar
Details

Composer is a dependency manager for PHP. Users publishing a composer.phar to a public web-accessible server where the composer.phar can be executed as a php file may be subject to a remote code execution vulnerability if PHP also has register_argc_argv enabled in php.ini. Versions 2.6.4, 2.2.22 and 1.10.27 patch this vulnerability. Users are advised to upgrade. Users unable to upgrade should make sure register_argc_argv is disabled in php.ini, and avoid publishing composer.phar to the web as this is not best practice.

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "composer",
        "purl": "pkg:bitnami/composer"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.27"
            },
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.2.21"
            },
            {
              "introduced": "2.3.0"
            },
            {
              "fixed": "2.6.4"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2023-43655"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:getcomposer:composer:*:*:*:*:*:*:*:*"
    ],
    "severity": "High"
  },
  "details": "Composer is a dependency manager for PHP. Users publishing a composer.phar to a public web-accessible server where the composer.phar can be executed as a php file may be subject to a remote code execution vulnerability if PHP also has `register_argc_argv` enabled in php.ini. Versions 2.6.4, 2.2.22 and 1.10.27 patch this vulnerability. Users are advised to upgrade. Users unable to upgrade should make sure `register_argc_argv` is disabled in php.ini, and avoid publishing composer.phar to the web as this is not best practice.",
  "id": "BIT-composer-2023-43655",
  "modified": "2026-09-08T08:34:36.952Z",
  "published": "2024-03-06T10:51:05.800Z",
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/composer/composer/commit/4fce14795aba98e40b6c4f5047305aba17a6120d"
    },
    {
      "type": "FIX",
      "url": "https://github.com/composer/composer/commit/955a48e6319c8962e5cd421b07c00ab3c728968c"
    },
    {
      "type": "FIX",
      "url": "https://github.com/composer/composer/commit/95e091c921037b7b6564942845e7b738f6b95c9c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/composer/composer/security/advisories/GHSA-jm6m-4632-36hf"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/66H2WKFUO255T3BZTL72TNYJYH2XM5FG/"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7AWYAUZNH565NWPIKGEIYBWHYNM5JGAE/"
    },
    {
      "type": "ADVISORY",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KFOPGPW2KS37O3KJWBRGTUWHTXCQXBS2/"
    },
    {
      "type": "DISCUSSION",
      "url": "https://lists.debian.org/debian-lts-announce/2024/03/msg00030.html"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-43655"
    }
  ],
  "schema_version": "1.5.0",
  "summary": "Remote Code Execution via web-accessible composer.phar"
}



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