Newsletter <= 3.8.2 - Open Redirect

2015-03-30 00:00

James Hooker

Strategic Overview

Status

Patched in 3.8.3

Affected PluginNewsletter – Send awesome emails from WordPress

Affected Version<= 3.8.2

CVSS4.3Medium

CVEN/A

View all Newsletter – Send awesome emails from WordPress vulnerabilities

Vulnerability Overview

The Newsletter plugin is susceptible to an Open Redirect vulnerability. This issue is due to the fact user input it taken, and trusted, without validation. This user input is used when tracking link clicks, via the ‘newsletter/statistics/link.php’ script. User input is Base64 encoded, and split on the ‘;’ character, the third column of which can be manipulated in order to control where the user is redirected to.

Technical Analysis

REMEDIATION: Update to version 3.8.3, or a newer patched version --- IDENTIFIER: CWE-601 (URL Redirection to Untrusted Site ('Open Redirect')) The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/db2a2ca9-a12c-412d-80f7-66f1dc3e09af

CVSS Vector

4.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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