Vulnerability identifier: #VU40590
Vulnerability risk: Medium
CVSSv3.1: 6.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:F/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
vBulletin
Web applications /
Forum & blogging software
Vendor: vBulletin
Description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The vB_Api_Hook::decodeArguments method in vBulletin 5 Connect 5.1.2 through 5.1.9 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via a crafted serialized object in the arguments parameter to ajax/api/hook/decodeArguments.
Mitigation
Install update from vendor's website.
Vulnerable software versions
vBulletin: 5.0.0 - 5.1.9
External links
http://blog.checkpoint.com/2015/11/05/check-point-discovers-critical-vbulletin-0-day/
http://packetstormsecurity.com/files/134331/vBulletin-5.1.2-Unserialize-Code-Execution.html
http://pastie.org/pastes/10527766/text?key=wq1hgkcj4afb9ipqzllsq
http://www.rapid7.com/db/modules/exploit/multi/http/vbulletin_unserialize
http://blog.sucuri.net/2015/11/vbulletin-exploits-in-the-wild.html
http://www.exploit-db.com/exploits/38629/
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.