Recent reports regarding multiple website hacks and data breaches are extremely alarming. It seems like the usage of a faulty and popular software can get you hacked, if not patched in time.
In case of mail.ru forums, the hackers were able to leak more than 25 million user accounts. The compromised communities are:
The Funcom leak is not that huge, just about 228 000 accounts.
Both incidents seem to be connected to usage of vulnerable vBulletin installation (SSRF vulnerability SB2016081009). The latest security patch for vBulletin was announced on August 1, describing fixes for remote code execution vulnerability in all versions of vBulletin.
This is not the first issue with vBulletin forums. The same outcome with a different vulnerability was achieved by Dota2, Trillian and Ubuntu forums in July this year.
If you use vBulletin, please patch it ASAP. To resolve this issue install security patch from vendor's website:
5.2.2 Patch Level 1
5.2.1 Patch Level 1
5.2.0 Patch Level 3
4.2.3 Patch Level 2
4.2.2 Patch Level 6
3.8.9 Patch Level 1
3.8.8 Patch Level 2
3.8.7 Patch Level 6