TP-LINK AC1750 A7 190726 Service Port 20002 hard-coded key

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.4	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in TP-LINK AC1750 A7 190726. This issue affects some unknown processing of the component Service Port 20002. Performing a manipulation results in hard-coded key. This vulnerability is reported as CVE-2020-10884. The attacker must have access to the local network to execute the attack. Moreover, an exploit is present. It is suggested to use restrictive firewalling.

Detailsinfo

A vulnerability was found in TP-LINK AC1750 A7 190726 (Router Operating System). It has been classified as critical. This affects some unknown processing of the component Service Port 20002. The manipulation with an unknown input leads to a hard-coded key vulnerability. CWE is classifying the issue as CWE-321. The use of a hard-coded cryptographic key significantly increases the possibility that encrypted data may be recovered. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

This vulnerability allows network-adjacent attackers execute arbitrary code on affected installations of TP-Link Archer A7 Firmware Ver: 190726 AC1750 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the tdpServer service, which listens on UDP port 20002 by default. This issue results from the use of hard-coded encryption key. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root. Was ZDI-CAN-9652.

The weakness was disclosed 03/25/2020. This vulnerability is uniquely identified as CVE-2020-10884 since 03/24/2020. Access to the local network is required for this attack to succeed. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1600.001 for this issue.

The exploit is shared for download at packetstormsecurity.com. It is declared as highly functional.

It is possible to mitigate the weakness by firewalling udp/20002.

The vulnerability is also documented in the vulnerability database at Exploit-DB (48331). The entries VDB-152281, VDB-152280, VDB-152279 and VDB-152278 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Router Operating System

Vendor

TP-LINK

Name

AC1750

Version

A7 190726

License

commercial

Website

Vendor: https://www.tp-link.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.5

VulDB Base Score: 6.3
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CNA Base Score: 8.1
CNA Vector (Zero Day Initiative): 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Hard-coded key
CWE: CWE-321 / CWE-320
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

03/24/2020 🔍
03/25/2020 +1 days 🔍
03/26/2020 +1 days 🔍
09/08/2024 +1627 days 🔍

Sourcesinfo

Vendor: tp-link.com

Advisory: 157255
Status: Not defined

CVE: CVE-2020-10884 (🔍)
GCVE (CVE): GCVE-0-2020-10884
GCVE (VulDB): GCVE-100-152277
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/26/2020 07:18
Updated: 09/08/2024 20:23
Changes: 03/26/2020 07:18 (38), 03/26/2020 07:23 (12), 05/11/2024 14:58 (18), 05/11/2024 15:03 (20), 07/02/2024 09:41 (7), 09/08/2024 20:23 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.