Synology-SA-17:13 WordPress
Publish Time: UTC+8
Last Updated: UTC+8
- Severity
- Moderate
- Status
- Resolved
Abstract
CVE-2017-8295 could allow remote attackers to reset a targeted user’s password using the HTTP header.
Severity
Moderate
Affected
- Products
- WordPress 4.7.3-0134 and before
- Models
- All Synology models
Description
WordPress through 4.7.4 relies on the Host HTTP header for a password-reset e-mail message, which makes it easier for remote attackers to reset arbitrary passwords by making a crafted wp-login.php?action=lostpassword request and then arranging for this message to bounce or be resent, leading to transmission of the reset key to a mailbox on an attacker-controlled SMTP server.
This is related to problematic use of the SERVER_NAME variable in wp-includes/pluggable.php in conjunction with the PHP mail function.
Exploitation is not achievable in all cases because it requires at least one of the following: (1) the attacker can prevent the victim from receiving any e-mail messages for an extended period of time (such as 5 days), (2) the victim's e-mail system sends an autoresponse containing the original message, or (3) the victim manually composes a reply containing the original message.
Mitigation
We are now working on a solution to this vulnerability. For an immediate workaround, please contact us at security@synology.com.
Update Availability
None
References
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8295
https://exploitbox.io/vuln/WordPress-Exploit-4-7-Unauth-Password-Reset-0day-CVE-2017-8295.html
http://www.freebuf.com/vuls/133816.html
https://www.exploit-db.com/exploits/41963/