Hackers they scan for WordPress sites with Epsilon Framework themes installed on more than 150.000 sites and are vulnerable to Function Injection attacks that could lead to full site access.
"To date, we have seen an increase of more than 7,5 million attacks against more than 1,5 million websites targeting these vulnerabilities coming from more than 18.000 IP addresses," said Wordfence QA engineer and threat analyst Ram Gall.
Scan for vulnerable sites
The ongoing wave of attacks on vulnerable WordPress sites targets recently fixed vulnerabilities.
While security vulnerabilities identified in recent months in issues using the Epsilon Framework could allow sites to be accessed through a remote code execution (RCE) exploit chain, most of these ongoing attacks are designed to detect only vulnerabilities.
“We are not providing additional details about the attacks at this time, as the exploit it doesn't seem to be in a mature state yet, and a large number of IP addresses are being used," Gall added.
“These attacks use POST requests to admin-ajax.php and therefore leave no separate log entries, although they will be visible in Wordfence Live Traffic. "
Vulnerable theme editions
These targeted theme versions of Epsilon Framework are known to be vulnerable to these attacks:
- shapely
- NewsMag
- Activello
- illdy
- Allegiant
- Newspaper
- Pixova Lite
- Brilliance
- MedZone Lite
- Regina lite
- Transcend
- affluent
- Bonkers
- Antreas
- NatureMag Lite
Owners and webmasters running vulnerable versions of these themes are advised to notify an update immediately if available.
If no update is available at this time, they should move on to another topic as soon as possible to rule out attacks.
In May, another mass campaign attackς στόχευσε περίπου 900.000 ιστότοπους WordPress μέσα σε μία εβδομάδα προσπαθώντας να “φυτέψει” backdoors ή να ανακατευθύνει τους επισκέπτες σε ιστότοπους κακόβουλης advertisings.
One month later, another series of attacks attempted to collect credentials from databases of about 1,3 million pages with WordPress by downloading configuration files.