Vulnerability Name:

CVE-2017-11400 (CCN-135210)

Assigned:2017-11-06
Published:2017-11-06
Updated:2019-10-03
Summary:An issue has been discovered on the Belden Hirschmann Tofino Xenon Security Appliance before 03.2.00. An incomplete firmware signature allows a local attacker to upgrade the equipment (kernel, file system) with unsigned, attacker-controlled, data. This occurs because the appliance_config file is signed but the .tar.sec file is unsigned.
CVSS v3 Severity:6.8 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
5.9 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Physical
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-347
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2017-11400

Source: XF
Type: UNKNOWN
belden-cve201711400-code-exec(135210)

Source: MISC
Type: Third Party Advisory
https://github.com/airbus-seclab/security-advisories/blob/master/belden/tofino.txt

Source: CCN
Type: Belden Security Bulletin BSECV-2017-14
Potential Tofino Firmware Signing Protocol Filtering Evasion /Firewall Bypass

Source: MISC
Type: Vendor Advisory
https://www.belden.com/hubfs/support/security/bulletins/Belden-Security-Bulletin-BSECV-2017-14-1v1-1.pdf

Vulnerable Configuration:Configuration 1:
  • cpe:/o:belden:tofino_xenon_security_appliance_firmware:*:*:*:*:*:*:*:* (Version <= 3.1.0)
  • AND
  • cpe:/h:belden:tofino_xenon_security_appliance:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    belden tofino xenon security appliance firmware *
    belden tofino xenon security appliance -