Critical severity · published Dec 14, 2017
CVE-2017-17672
In vBulletin through 5.3.x, there is an unauthenticated deserialization vulnerability that leads to arbitrary file deletion and, under certain circumstances, code execution,…
9.8
CVSS
15.2%
EPSS
No
On KEV
Description
In vBulletin through 5.3.x, there is an unauthenticated deserialization vulnerability that leads to arbitrary file deletion and, under certain circumstances, code execution, because of unsafe usage of PHP's unserialize() in vB_Library_Template's cacheTemplates() function, which is a publicly exposed API. This is exploited with the templateidlist parameter to ajax/api/template/cacheTemplates.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)15.2% · higher than 97% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VB
Vbulletin · Vbulletin
5.0.1 through 5.3.3; 5.0.0; 5.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-17672
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-17672
Exploit
https://blogs.securiteam.com/index.php/archives/3573
Exploit
https://www.exploit-db.com/exploits/43362/
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