CVE-2017-8295
wordpress - security update
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.
How to fix CVE-2017-8295
To remediate CVE-2017-8295, upgrade the affected package to a fixed version below.
- —upgrade to 4.7.5+dfsg-2 or later
- —upgrade to 3.6.1+dfsg-1~deb7u15 or later
- —upgrade to 4.1+dfsg-1+deb8u14 or later
Is CVE-2017-8295 being exploited?
Likely — EPSS is 77.1%, placing CVE-2017-8295 in the top tier of vulnerabilities by exploitation probability. Prioritise patching.
Affected packages (3)
- from 0, < 4.7.5+dfsg-2
- from 0, < 3.6.1+dfsg-1~deb7u15
- from 0, < 4.1+dfsg-1+deb8u14
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N |