GHSA-7q44-r25x-wm4q
Suggest an improvement- Source
- https://github.com/advisories/GHSA-7q44-r25x-wm4q
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/06/GHSA-7q44-r25x-wm4q/GHSA-7q44-r25x-wm4q.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-7q44-r25x-wm4q
- Aliases
- Published
- 2021-06-22T15:17:51Z
- Modified
- 2024-02-17T05:31:56.638886Z
- Severity
-
- 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- Remote Code Execution vulnerability in PHPMailer 6.4.1 running on Windows
- Details
-
PHPMailer 6.4.1 contains a possible remote code execution vulnerability through the
$lang_pathparameter of thesetLanguage()method. If the$lang_pathparameter is passed unfiltered from user input, it can be set to a UNC path, and if an attacker is also able to create a remote mount on the server that the UNC path points to, a script file under their control may be executed.Impact
Arbitrary code may be run by a remote attacker under the web server or PHP process running on Window hosts.
Patches
Mitigated in PHPMailer 6.5.0 by no longer treating translation files as PHP code, but by parsing their text content directly. This approach avoids the possibility of executing unknown code while retaining backward compatibility. This isn't ideal, so the current translation format is deprecated and will be replaced in the next major release.
Workarounds
Any of: * Ensure that calling code does not pass unfiltered user-supplied data to the
$lang_pathparameter of thesetLanguage()method. * Block or filter the use of unknown UNC paths in this parameter (or altogether). * Ensure that unauthorised users do not have the ability to read from unknown remote servers via UNC paths. * Run on an OS that does not support UNC pathsReferences
Reported by listensec.com via Tidelift.
For more information
If you have any questions or comments about this advisory: * Open an issue in PHPMailer * Email the maintainers
- Database specific
{ "nvd_published_at": "2021-06-16T18:15:00Z", "cwe_ids": [ "CWE-434", "CWE-94" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2021-06-16T19:50:57Z" }- References
-
- https://github.com/PHPMailer/PHPMailer/security/advisories/GHSA-7q44-r25x-wm4q
- https://nvd.nist.gov/vuln/detail/CVE-2021-34551
- https://github.com/PHPMailer/PHPMailer/commit/acd264bf17ff4ac5c915f0d4226dce8a9ea70bc3
- https://github.com/FriendsOfPHP/security-advisories/blob/master/phpmailer/phpmailer/CVE-2021-34551.yaml
- https://github.com/PHPMailer/PHPMailer/blob/master/SECURITY.md
- https://github.com/PHPMailer/PHPMailer/releases/tag/v6.5.0
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3YRMWGA4VTMXFB22KICMB7YMFZNFV3EJ
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FJYSOFCUBS67J3TKR74SD3C454N7VTYM
Affected packages
Packagist / phpmailer/phpmailer
Package
- Name
- phpmailer/phpmailer
- Purl
- pkg:composer/phpmailer/phpmailer
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed6.5.0