VDB-208841 · CVE-2022-38823 · GCVE-0-2022-38823

TOTOLINK T6 4.1.5cu.709_B20210518/4.1.5cu.748_B20211015 /etc/shadow.sample hard-coded password

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.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in TOTOLINK T6 4.1.5cu.709_B20210518/4.1.5cu.748_B20211015 and classified as problematic. The affected element is an unknown function of the file /etc/shadow.sample. The manipulation leads to hard-coded password. This vulnerability is documented as CVE-2022-38823. The attack can be initiated remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability was found in TOTOLINK T6 4.1.5cu.709_B20210518/4.1.5cu.748_B20211015 and classified as problematic. This issue affects an unknown part of the file /etc/shadow.sample. The manipulation with an unknown input leads to a hard-coded password vulnerability. Using CWE to declare the problem leads to CWE-259. The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components. Impacted is confidentiality. The summary by CVE is:

In TOTOLINK T6 V4.1.5cu.709_B20210518, there is a hard coded password for root in /etc/shadow.sample.

The weakness was released 09/16/2022. The advisory is shared at github.com. The identification of this vulnerability is CVE-2022-38823 since 08/29/2022. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1078.001 for this issue.

A public exploit has been developed by reisen_1943. The exploit is available at anduinbrian.github.io. It is declared as proof-of-concept. The advisory illustrates:

The credential in /etc/shadow could be cracked, but couldn't use to login. Router change the root's password during boot. The binary change the root password is /bin/cs

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

TOTOLINK

Name

Version

License

commercial

Website

Vendor: https://www.totolink.net/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 3.1
VulDB Temp Score: 2.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

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

Exploitinginfo

Class: Hard-coded password
CWE: CWE-259 / CWE-255
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: reisen_1943
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍