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CVE-2017-8295

Published: 4 May 2017

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.

Priority

Medium

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
wordpress
Launchpad, Ubuntu, Debian
groovy Not vulnerable
(4.9.5+dfsg1-1)
hirsute Not vulnerable
(4.9.5+dfsg1-1)
xenial Needed

jammy Not vulnerable
(4.9.5+dfsg1-1)
precise Ignored
(end of life)
kinetic Not vulnerable
(4.9.5+dfsg1-1)
lunar Not vulnerable
(4.9.5+dfsg1-1)
artful Ignored
(end of life)
bionic Not vulnerable
(4.9.5+dfsg1-1)
cosmic Not vulnerable
(4.9.5+dfsg1-1)
disco Not vulnerable
(4.9.5+dfsg1-1)
eoan Not vulnerable
(4.9.5+dfsg1-1)
focal Not vulnerable
(4.9.5+dfsg1-1)
impish Not vulnerable
(4.9.5+dfsg1-1)
trusty Does not exist
(trusty was needed)
upstream
Released (4.7.5+dfsg-2)
yakkety Ignored
(end of life)
zesty Ignored
(end of life)
mantic Not vulnerable
(4.9.5+dfsg1-1)

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N