CVE-2017-5223
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.
Does this matter?
Lower severity and a low EPSS score (2.16%). Track it; it rarely justifies an emergency change on its own.
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 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.16% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- phpmailer project/phpmailer
- Source
- cve@mitre.org
References
- http://kalilinux.co/2017/01/12/phpmailer-cve-2017-5223-local-information-disclosure-vulnerability-analysis/Exploit, Third Party Advisory
- http://www.securityfocus.com/bid/95328Third Party Advisory, VDB Entry
- https://github.com/PHPMailer/PHPMailer/blob/master/SECURITY.mdIssue Tracking, Patch, Third Party Advisory
- https://www.exploit-db.com/exploits/43056/
- http://kalilinux.co/2017/01/12/phpmailer-cve-2017-5223-local-information-disclosure-vulnerability-analysis/Exploit, Third Party Advisory
- http://www.securityfocus.com/bid/95328Third Party Advisory, VDB Entry
- https://github.com/PHPMailer/PHPMailer/blob/master/SECURITY.mdIssue Tracking, Patch, Third Party Advisory
- https://www.exploit-db.com/exploits/43056/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.