CVE-2017-11401
Improper handling of the mbap.length field of ModBus packets in the ModBus DPI filter allows an attacker to send malformed/crafted packets to a protected asset, bypassing function code filtering.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue has been discovered on the Belden Hirschmann Tofino Xenon Security Appliance before 03.2.00. Improper handling of the mbap.length field of ModBus packets in the ModBus DPI filter allows an attacker to send malformed/crafted packets to a protected asset, bypassing function code filtering.
- CVSS 3.0
- 9.8 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.40% probability · 71th percentile
- CISA KEV
- Not listed
- Affected
- belden/tofino xenon security appliance firmware
- Source
- cve@mitre.org
References
- https://github.com/airbus-seclab/security-advisories/blob/master/belden/tofino.txtThird Party Advisory
- https://www.belden.com/hubfs/support/security/bulletins/Belden-Security-Bulletin-BSECV-2017-14-1v1-1.pdfVendor Advisory
- https://github.com/airbus-seclab/security-advisories/blob/master/belden/tofino.txtThird Party Advisory
- https://www.belden.com/hubfs/support/security/bulletins/Belden-Security-Bulletin-BSECV-2017-14-1v1-1.pdfVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.