XSS in Siemens Scalance X200
CVE-2018-4842
A vulnerability has been identified in SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions < V5.4.1), SCALANCE X-200RNA switch family (All versions < V3.2.7), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.3). A remote, authenticated attacker with access to the configuration web server could be able to store script code on the web site, if the HRP redundancy option is set. This code could be executed in the web browser of victims visiting this web site (XSS), affecting its confidentiality, integrity and availability. User interaction is required for successful exploitation, as the user needs to visit the manipulated web site. At the stage of publishing this security advisory no public exploitation is known. The vendor has confirmed the vulnerability and provides mitigations to resolve it.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.008 (55.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Siemens Scalance X200
- Siemens Scalance X200 Firmware
- Siemens Scalance X200 Irt
- Siemens Scalance X200irt Firmware
- Siemens Scalance X-200irt Switch Family (Incl. Siplus Net Variants) — versions All versions < V5.4.1
- Siemens Scalance X-200rna Switch Family — versions All versions < V3.2.7
- Siemens Scalance X300
- Siemens Scalance X300 Firmware
- Siemens Scalance X-300 Switch Family (Incl. X408 And Siplus Net Variants) — versions All versions < V4.1.3
Weakness classification (CWE)
References
- www.securityfocus.com/bid/104494 (vdb-entry)
- cert-portal.siemens.com/productcert/pdf/ssa-480829.pdf (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-4842?
- CVE-2018-4842 is a medium-severity vulnerability in Siemens Scalance X200, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2018-06-14.
- How severe is CVE-2018-4842?
- Medium severity. CVSS v3 base score is 4.8 out of 10.