CVE-2017-8295 : WordPress through 4.7.4 relies on the Host HTTP header for a password-reset e-mail message, which makes it easier for re

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.

Published 2017-05-04 14:29:00

Updated 2017-11-04 01:29:54

Source MITRE

View at NVD, CVE.org

Threat overview for CVE-2017-8295

Top countries where our scanners detected CVE-2017-8295

Top open port discovered on systems with this issue 80

IPs affected by CVE-2017-8295 23

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2017-8295!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2017-8295

Probability of exploitation activity in the next 30 days: 2.83%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 89 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2017-8295

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:N/I:P/A:N	8.6	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
5.9	MEDIUM	CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N	2.2	3.6	NIST
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: High Availability: None

CWE ids for CVE-2017-8295

CWE-640 Weak Password Recovery Mechanism for Forgotten Password

The product contains a mechanism for users to recover or change their passwords without knowing the original password, but the mechanism is weak.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2017-8295

http://www.debian.org/security/2017/dsa-3870

Debian -- Security Information -- DSA-3870-1 wordpress

CVEs referencing this url
https://exploitbox.io/vuln/WordPress-Exploit-4-7-Unauth-Password-Reset-0day-CVE-2017-8295.html

WordPress Core <= 4.7.4 Potential Unauthorized Password Reset (0day)
Exploit;Technical Description;Third Party Advisory
https://www.exploit-db.com/exploits/41963/

WordPress < 4.7.4 - Unauthorized Password Reset
Exploit;Third Party Advisory
http://www.securitytracker.com/id/1038403

WordPress Password Reset Server Name Validation Flaw Lets Remote Users Obtain Password Reset Information for the Target User in Certain Cases - SecurityTracker
http://www.securityfocus.com/bid/98295

WordPress Password Reset CVE-2017-8295 Security Bypass Vulnerability
Third Party Advisory;VDB Entry
https://wpvulndb.com/vulnerabilities/8807

WordPress 2.3-4.8.3 - Host Header Injection in Password Reset

Products affected by CVE-2017-8295