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[email protected]CVE-2020-3923

HistoryFeb 27, 2020 - 4:15 a.m.

CVE-2020-3923

2020-02-2704:15:00

CWE-287

[email protected]

web.nvd.nist.gov

authentication

firmware

tonnet

security vulnerability

cve-2020-3923

nvd

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

8 High

AI Score

Confidence

Low

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.003 Low

EPSS

Percentile

70.9%

JSON

DVR firmware in TAT-76 and TAT-77 series of products, provided by TONNET, contain misconfigured authentication mechanism. Attackers can crack the default password and gain access to the system.

CPENameOperatorVersion
tonnet:tat-77104g1_firmwaretonnet tat-77104g1 firmwareletat-77104g1_20190107
tonnet:tat-70432n_firmwaretonnet tat-70432n firmwareletat-77208g1_20181225
tonnet:tat-71416g1_firmwaretonnet tat-71416g1 firmwareletat-71416g1_20181225
tonnet:tat-71832g1_firmwaretonnet tat-71832g1 firmwareletat-71832g1_20190510
tonnet:tat-76104g3_firmwaretonnet tat-76104g3 firmwarele20181220_76104g3
tonnet:tat-76108g3_firmwaretonnet tat-76108g3 firmwarele20181221_76208g3
tonnet:tat-76116g3_firmwaretonnet tat-76116g3 firmwarele20181221_76216g3
tonnet:tat-76132g3_firmwaretonnet tat-76132g3 firmwareletat-70832g3_20181221-1

CPE	Name	Operator	Version
tonnet:tat-77104g1_firmware	tonnet tat-77104g1 firmware	le	tat-77104g1_20190107
tonnet:tat-70432n_firmware	tonnet tat-70432n firmware	le	tat-77208g1_20181225
tonnet:tat-71416g1_firmware	tonnet tat-71416g1 firmware	le	tat-71416g1_20181225
tonnet:tat-71832g1_firmware	tonnet tat-71832g1 firmware	le	tat-71832g1_20190510
tonnet:tat-76104g3_firmware	tonnet tat-76104g3 firmware	le	20181220_76104g3
tonnet:tat-76108g3_firmware	tonnet tat-76108g3 firmware	le	20181221_76208g3
tonnet:tat-76116g3_firmware	tonnet tat-76116g3 firmware	le	20181221_76216g3
tonnet:tat-76132g3_firmware	tonnet tat-76132g3 firmware	le	tat-70832g3_20181221-1

References

tvn.twcert.org.tw/taiwanvn/TVN-201910003

www.chtsecurity.com/news/4ef5eb3a-fdc3-4d78-8dd7-ec7213e2bbcf

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

8 High

AI Score

Confidence

Low

10 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

0.003 Low

EPSS

Percentile

70.9%

JSON

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