SB2017010903 - Fedora 24 update for php-PHPMailer

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2017-5223)

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.

2) Remote code injection (CVE-ID: CVE-2016-10045)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists in PHPMailer due to insufficient sanitization of user-supplied input, when Sender property is not set. A remote attacker can use backslashed double quote character (e.g. \”) to pass additional commands to original mail command and execute them with privileges of the current web server user.

Successful exploitation of the vulnerability may result in system compromise.

Note: this vulnerability exists due to incorrect fix for vulnerability SB2016122601 (CVE-2016-10033)

3) Remote code injection (CVE-ID: CVE-2016-10033)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insufficient sanitization of user-supplied input passed via specially crafted “From” address to mailSend() function. A remote attacker can use backslashed double quote character (e.g. \") to pass additional commands to original mail command and execute them with privileges of the current web server user.

Successful exploitation of the vulnerability may result in system compromise.

Remediation

Install update from vendor's website.

References

• https://bodhi.fedoraproject.org/updates/FEDORA-2017-c3dc97e1e1