#VU4756 Information disclosure in PHPMailer - CVE-2017-5223

Vulnerability identifier: #VU4756

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green

CVE-ID: CVE-2017-5223

CWE-ID: CWE-200

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerable software:
PHPMailer

Software vendor:
phpmailer.sourceforge.net

The vulnerability allows a remote attacker to obtain access to potentially sensitive information.

The vulnerability exists in PHPMailer before 5.2.22 when handling HTML documents using msgHTML() method. A remote attacker can create a specially crafted message, containing relative links to images withing message and attach arbitrary local file to e-mail message.

Successful exploitation of this vulnerability may allow an attacker to send out arbitrary system files as email attachments.

Update to version 5.2.22.

• http://kalilinux.co/2017/01/12/phpmailer-cve-2017-5223-local-information-disclosure-vulnerability-an...
• https://github.com/PHPMailer/PHPMailer/blob/master/SECURITY.md