PT-2021-3639 · WordPress · Ewww Image Optimizer

Sean Murphy · Published 2021-05-05 · Updated 2021-05-13 · CVE-2016-20010

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions EWWW Image Optimizer versions prior to 2.8.5

Description The issue is related to a flaw in the protection mechanism of the EWWW Image Optimizer plugin for WordPress, which can be exploited by a remote attacker to execute arbitrary code. This is because the plugin relies on a protection mechanism involving boolval, which is not available in PHP versions before 5.5.

Recommendations For versions prior to 2.8.5, update to version 2.8.5 or later to resolve the issue. As a temporary workaround, consider disabling the plugin until a patch is applied. Restrict access to the plugin's functionality to minimize the risk of exploitation.

Fix

Protection Mechanism Failure

Weakness Enumeration

CWE-693

Related Identifiers

BDU:2021-03858

CVE-2016-20010

Affected Products

Ewww Image Optimizer

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2016-20010 · Security Note
• https://bdu.fstec.ru/vul/2021-03858 · Security Note
• https://osv.dev/vulnerability/CVE-2016-20010 · Vendor Advisory
• https://plugins.trac.wordpress.org/browser/ewww-image-optimizer/trunk/changelog.txt · Note
• https://t.me/cvenotify/14089 · Telegram Post
• https://wordfence.com/blog/2016/06/vulnerability-ewww-image-optimizer · Note
• https://t.me/cvenotify/14397 · Telegram Post
• https://vuldb.com/?id.174461 · Note