VDB-214116 · CVE-2022-43636 · ZDI-22-1614

TP-Link TL-WR940N httpd random values

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.
4.8	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in TP-Link TL-WR940N. Affected by this issue is some unknown functionality of the component httpd. The manipulation results in random values. This vulnerability is identified as CVE-2022-43636. The attack can only be performed from the local network. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in TP-Link TL-WR940N (Router Operating System) (version unknown). It has been classified as problematic. Affected is an unknown function of the component httpd. The manipulation with an unknown input leads to a random values vulnerability. CWE is classifying the issue as CWE-330. The product uses insufficiently random numbers or values in a security context that depends on unpredictable numbers. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was released 11/21/2022 as ZDI-22-1614. The advisory is shared for download at zerodayinitiative.com. This vulnerability is traded as CVE-2022-43636 since 10/21/2022. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1600.001.

Upgrading eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Router Operating System

Vendor

TP-Link

Name

TL-WR940N

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: 5.0
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.0
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

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: Random values
CWE: CWE-330 / CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/21/2022 🔍
11/21/2022 +31 days 🔍
11/21/2022 +0 days 🔍
11/21/2022 +0 days 🔍

Sourcesinfo

Vendor: tp-link.com

Advisory: ZDI-22-1614
Status: Confirmed

CVE: CVE-2022-43636 (🔍)
GCVE (CVE): GCVE-0-2022-43636
GCVE (VulDB): GCVE-100-214116

Entryinfo

Created: 11/21/2022 21:17
Changes: 11/21/2022 21:17 (39)
Complete: 🔍
Cache ID: 216::103