CVE-2017-5223 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Reference

http://kalilinux.co/2017/01/12/phpmailer-cve-2017-5223-local-information-disclosure-vulnerability-analysis/ http://www.securityfocus.com/bid/95328 https://github.com/PHPMailer/PHPMailer/blob/master/SECURITY.md https://www.exploit-db.com/exploits/43056/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

5.5