CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
Percentile
70.1%
RSI Video Technologies’ Videofied security system uses a software named Frontel to monitor alarm status. Frontel uses an insecure custom protocol to communicate with its Frontel server.
Frontel uses a custom protocol running on TCP port 888. The protocol performs an authentication handshake using AES-128 and a pre-shared key, and then sends data.
CWE-321**: Use of Hard-coded Cryptographic Key -**CVE-2015-8252
The authentication protocol uses a pre-shared key that entirely derived from the serial number of the device. This serial number is transmitted in the plain in messages, allowing an attacker to determine the key.
CWE-311: Missing Encryption of Sensitive Data - CVE-2015-8253
Messages and videos are sent unencrypted after the AES authentication handshake. The messages are sent in plain text, and the videos are sent as MJPEG video.
CWE-345: Insufficient Verification of Data Authenticity - CVE-2015-8254
Messages are sent without any integrity protection of the data. Messages may be spoofed to, for example, send false alarm signals or deactivate alarms.
For more information, please see the researcher’s blog post.
A remote unauthenticated attacker may be able to spoof messages to manipulate and snoop on data, including video.
Apply an update
RSI Video Technologies has released an update to Frontel that introduces Frontel protocol version 3 to address these issues. Affected users should receive the update over the next month (by end of December 2015). Affected users are encouraged to update as soon as possible, and to contact RSI with any questions or concerns.
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Notified: August 07, 2015 Updated: November 30, 2015
Statement Date: November 05, 2015
Affected
We have not received a statement from the vendor.
We are not aware of further vendor information regarding this vulnerability.
Group | Score | Vector |
---|---|---|
Base | 9.4 | AV:N/AC:L/Au:N/C:C/I:C/A:N |
Temporal | 7.4 | E:POC/RL:OF/RC:C |
Environmental | 5.5 | CDP:ND/TD:M/CR:ND/IR:ND/AR:ND |
Thanks to Andrew Tierney for reporting this vulnerability.
This document was written by Garret Wassermann.
CVE IDs: | [CVE-2015-8252 ](<http://web.nvd.nist.gov/vuln/detail/CVE-2015-8252 >), CVE-2015-8253, CVE-2015-8254 |
---|---|
Date Public: | 2015-11-30 Date First Published: |
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
Percentile
70.1%