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.

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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

8% 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

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