XSS in Open-Xchange Appsuite
CVE-2016-5124
An issue was discovered in Open-Xchange OX App Suite before 7.8.1-rev14. Adding images from external sources to HTML editors by drag&drop can potentially lead to script code execution in the context of the active user. To exploit this, a user needs to be tricked to use an image from a specially crafted website and add it to HTML editor areas of OX App Suite, for example E-Mail Compose or OX Text. This specific attack circumvents typical XSS filters and detection mechanisms since the code is not loaded from an external service but injected locally. 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.). To exploit this vulnerability, a attacker needs to convince a user to follow specific steps (social-engineering).
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: 0.013 (70.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000
Affected products
Weakness classification (CWE)
References
- packetstormsecurity.com/files/137894/Open-Xchange-App-Suite-7.8.1-Cross-Site-Sc… (VDB Entry, Third Party Advisory)
- www.securityfocus.com/archive/1/538892/100/0/threaded (mailing-list)
- www.securitytracker.com/id/1036296 (VDB Entry, Third Party Advisory, vdb-entry)
- www.securityfocus.com/bid/91775 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2016-5124?
- CVE-2016-5124 is a medium-severity vulnerability in Open-Xchange Appsuite, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2016-12-15.
- How severe is CVE-2016-5124?
- Medium severity. CVSS v3 base score is 6.1 out of 10.