Unauthenticated Deserialization Flaw in vBulletin by Internet Brands
CVE-2017-17672

9.8CRITICAL

Key Information:

Vendor

Vbulletin

Status
Vbulletin
Vendor
CVE Published:
14 December 2017

What is CVE-2017-17672?

In vBulletin versions up to 5.3.x, an unauthenticated deserialization vulnerability exists due to improper handling of PHP's unserialize() function in the vB_Library_Template's cacheTemplates() method. This flaw can be exploited via the publicly accessible ajax/api/template/cacheTemplates endpoint, specifically through the templateidlist parameter. Exploitation may lead to arbitrary file deletion and, in certain situations, can enable remote code execution, posing significant risks for affected installations.

References

https://www.exploit-db.com/exploits/43362/
exploitx_refsource_EXPLOIT-DB
https://blogs.securiteam.com/index.php/archives/3573
x_refsource_MISC

EPSS Score

10% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.