XSS in Open-Xchange Ox Guard
CVE-2016-6854
An issue was discovered in Open-Xchange OX Guard before 2.4.2-rev5. Script code which got injected to a mail with inline PGP signature gets executed when verifying the signature. 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.).
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.024 (83.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securityfocus.com/bid/92920 (VDB Entry, Third Party Advisory, vdb-entry)
- packetstormsecurity.com/files/138701/Open-Xchange-Guard-2.4.2-Cross-Site-Script… (Exploit, VDB Entry, Third Party Advisory)
- www.exploit-db.com/exploits/40377/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.securityfocus.com/archive/1/539395/100/0/threaded (mailing-list)
Frequently asked questions
- What is CVE-2016-6854?
- CVE-2016-6854 is a medium-severity vulnerability in Open-Xchange Ox Guard, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2016-12-15.
- How severe is CVE-2016-6854?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2016-6854 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.