Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-3924

Severity CVSS v4.0:
Pending analysis
Type:
CWE-77 Command Injection
Publication date:
27/02/2020
Last modified:
21/07/2021

Description

DVR firmware in TAT-76 and TAT-77 series of products, provided by TONNET do not properly verify patch files. Attackers can inject a specific command into a patch file and gain access to the system.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
9.80
Severity 3.x
CRITICAL
Vector 2.0
AV:N/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 10.00 HIGH
Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
10.00
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:tonnet:tat-77104g1_firmware:*:*:*:*:*:*:*:* tat-77104g1_20190107 (including)
cpe:2.3:h:tonnet:tat-77104g1:-:*:*:*:*:*:*:*
cpe:2.3:o:tonnet:tat-70432n_firmware:*:*:*:*:*:*:*:* tat-77208g1_20181225 (including)
cpe:2.3:h:tonnet:tat-70432n:-:*:*:*:*:*:*:*
cpe:2.3:o:tonnet:tat-71416g1_firmware:*:*:*:*:*:*:*:* tat-71416g1_20181225 (including)
cpe:2.3:h:tonnet:tat-71416g1:-:*:*:*:*:*:*:*
cpe:2.3:o:tonnet:tat-71832g1_firmware:*:*:*:*:*:*:*:* tat-71832g1_20190510 (including)
cpe:2.3:h:tonnet:tat-71832g1:-:*:*:*:*:*:*:*
cpe:2.3:o:tonnet:tat-76104g3_firmware:*:*:*:*:*:*:*:* 20181220_76104g3 (including)
cpe:2.3:h:tonnet:tat-76104g3:-:*:*:*:*:*:*:*
cpe:2.3:o:tonnet:tat-76108g3_firmware:*:*:*:*:*:*:*:* 20181221_76208g3 (including)
cpe:2.3:h:tonnet:tat-76108g3:-:*:*:*:*:*:*:*
cpe:2.3:o:tonnet:tat-76116g3_firmware:*:*:*:*:*:*:*:* 20181221_76216g3 (including)
cpe:2.3:h:tonnet:tat-76116g3:-:*:*:*:*:*:*:*
cpe:2.3:o:tonnet:tat-76132g3_firmware:*:*:*:*:*:*:*:* tat-70832g3_20181221-1 (including)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools