Medium severity · published Dec 15, 2016
CVE-2016-6851
An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5
6.1
CVSS
2.6%
EPSS
No
On KEV
Description
An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code can be provided as parameter to the OX Guard guest reader web application. This allows cross-site scripting attacks against arbitrary users since no prior authentication is needed. Malicious script code can be executed within a user's context. This can lead to session hijacking or triggering unwanted actions via the web interface (sending mail, deleting data etc.) in case the user has an active session on the same domain already.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.6% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OG
OX Guard · Open-xchange
through 2.4.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-6851
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-6851
Exploit
http://packetstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Scripting.html
www.securityfocus.com
http://www.securityfocus.com/archive/1/539395/100/0/threaded
Third Party Advisory
http://www.securityfocus.com/bid/92920
Exploit
https://www.exploit-db.com/exploits/40377/
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