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, because of unsafe usage of PHP's unserialize() in vB_Library_Template's…
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EPSS puts the probability of exploitation in the next 30 days at 15.2%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
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 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 15.19% probability · 97th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- vbulletin/vbulletin
- Source
- cve@mitre.org
References
- https://blogs.securiteam.com/index.php/archives/3573Exploit, Third Party Advisory
- https://www.exploit-db.com/exploits/43362/Exploit, Third Party Advisory, VDB Entry
- https://blogs.securiteam.com/index.php/archives/3573Exploit, Third Party Advisory
- https://www.exploit-db.com/exploits/43362/Exploit, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.