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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTR4NWgtY3IyOS1maHA2
Local file disclosure in PHPMailer
An issue was discovered in PHPMailer before 5.2.22. PHPMailer's msgHTML method applies transformations to an HTML document to make it usable as an email message body. One of the transformations is to convert relative image URLs into attachments using a script-provided base directory. If no base directory is provided, it resolves to /, meaning that relative image URLs get treated as absolute local file paths and added as attachments. To form a remote vulnerability, the msgHTML method must be called, passed an unfiltered, user-supplied HTML document, and must not set a base directory.
Impact
Arbitrary local files can be attached to email messages.
Patches
Fixed in 5.2.22
Workarounds
Validate input before using user-supplied file paths.
References
https://nvd.nist.gov/vuln/detail/CVE-2017-5223
For more information
If you have any questions or comments about this advisory:
- Open a private issue in the PHPMailer project
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTR4NWgtY3IyOS1maHA2
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Moderate
Classification: General
Published: over 4 years ago
Updated: almost 2 years ago
CVSS Score: 5.5
CVSS vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Identifiers: GHSA-4x5h-cr29-fhp6, CVE-2017-5223
References:
- https://github.com/PHPMailer/PHPMailer/security/advisories/GHSA-4x5h-cr29-fhp6
- https://github.com/FriendsOfPHP/security-advisories/blob/master/phpmailer/phpmailer/CVE-2017-5223.yaml
- https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.22
- https://nvd.nist.gov/vuln/detail/CVE-2017-5223
- https://github.com/PHPMailer/PHPMailer/blob/master/SECURITY.md
- https://www.exploit-db.com/exploits/43056/
- http://kalilinux.co/2017/01/12/phpmailer-cve-2017-5223-local-information-disclosure-vulnerability-analysis/
- http://www.securityfocus.com/bid/95328
- https://github.com/advisories/GHSA-4x5h-cr29-fhp6
Blast Radius: 23.6
Affected Packages
packagist:phpmailer/phpmailer
Dependent packages: 1,306Dependent repositories: 19,318
Downloads: 70,062,547 total
Affected Version Ranges: >= 5.0.0, < 5.2.22
Fixed in: 5.2.22
All affected versions: 5.2.2, 5.2.4, 5.2.5, 5.2.6, 5.2.7, 5.2.8, 5.2.9, 5.2.10, 5.2.11, 5.2.12, 5.2.13, 5.2.14, 5.2.15, 5.2.16, 5.2.17, 5.2.18, 5.2.19, 5.2.20, 5.2.21
All unaffected versions: 5.2.22, 5.2.23, 5.2.24, 5.2.25, 5.2.26, 5.2.27, 5.2.28, 6.0.0, 6.0.1, 6.0.2, 6.0.3, 6.0.4, 6.0.5, 6.0.6, 6.0.7, 6.1.0, 6.1.1, 6.1.2, 6.1.3, 6.1.4, 6.1.5, 6.1.6, 6.1.7, 6.1.8, 6.2.0, 6.3.0, 6.4.0, 6.4.1, 6.5.0, 6.5.1, 6.5.2, 6.5.3, 6.5.4, 6.6.0, 6.6.1, 6.6.2, 6.6.3, 6.6.4, 6.6.5, 6.7.1, 6.8.0, 6.8.1, 6.9.0, 6.9.1, 6.9.2