CVE-2020-5763

Grandstream HT800 series firmware version 1.0.17.5 and below contain a backdoor in the SSH service. An authenticated remote attacker can obtain a root shell by correctly answering a challenge prompt.

CVSS v3.0 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

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

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://www.tenable.com/security/research/tra-2020-43	Exploit Third Party Advisory
https://www.tenable.com/security/research/tra-2020-47	Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:grandstream:ht801_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:grandstream:ht801:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:grandstream:ht802_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:grandstream:ht802:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:grandstream:ht812_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:grandstream:ht812:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:o:grandstream:ht814_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:grandstream:ht814:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND

cpe:2.3:o:grandstream:ht818_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:grandstream:ht818:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND

cpe:2.3:o:grandstream:ht813_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:grandstream:ht813:-:*:*:*:*:*:*:*

Information

Published : 2020-07-29 12:15

Updated : 2020-07-31 11:14

NVD link : CVE-2020-5763

Mitre link : CVE-2020-5763

JSON object : View

CWE

CWE-326

Inadequate Encryption Strength

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Products Affected

grandstream

ht812_firmware
ht801_firmware
ht813_firmware
ht802_firmware
ht801
ht812
ht813
ht818_firmware
ht814_firmware
ht802
ht814
ht818

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