CVE-2017-8295
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
WordPress Core < 4.7.4 - Unauthorized Password Reset
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 4.7.5+dfsg-2 |
| debian | bullseye | fixed | 4.7.5+dfsg-2 |
| debian | forky | fixed | 4.7.5+dfsg-2 |
| debian | sid | fixed | 4.7.5+dfsg-2 |
| debian | trixie | fixed | 4.7.5+dfsg-2 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| wordpress | wordpress | {"endIncluding":"4.7.4"} | |
References
- http://www.debian.org/security/2017/dsa-3870
- http://www.securityfocus.com/bid/98295
- http://www.securitytracker.com/id/1038403
- https://exploitbox.io/vuln/WordPress-Exploit-4-7-Unauth-Password-Reset-0day-CVE-2017-8295.html
- https://wpvulndb.com/vulnerabilities/8807
- https://www.exploit-db.com/exploits/41963/
- https://security-tracker.debian.org/tracker/CVE-2017-8295
CWEs
CWE-640
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.