Information Exposure Affecting libphp-phpmailer package, versions <5.2.14+dfsg-1ubuntu0.1~esm1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1604-LIBPHPPHPMAILER-297979
- published16 Jan 2017
- disclosed16 Jan 2017
Introduced: 16 Jan 2017
CVE-2017-5223 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.04 libphp-phpmailer to version 5.2.14+dfsg-1ubuntu0.1~esm1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libphp-phpmailer package and not the libphp-phpmailer package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.04 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2017-5223
- https://security-tracker.debian.org/tracker/CVE-2017-5223
- https://www.exploit-db.com/exploits/43056/
- http://kalilinux.co/2017/01/12/phpmailer-cve-2017-5223-local-information-disclosure-vulnerability-analysis/
- https://github.com/PHPMailer/PHPMailer/blob/master/SECURITY.md
- http://www.securityfocus.com/bid/95328
- https://www.exploit-db.com/exploits/43056