VDB-193054 · CVE-2021-45392 · GCVE-0-2021-45392

Tenda AX12 22.03.01.21_CN /goform/setIPv6Status sub_422CE4 prefixDelegate buffer overflow

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.
3.2	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Tenda AX12 22.03.01.21_CN. This issue affects the function sub_422CE4 of the file /goform/setIPv6Status. Executing a manipulation of the argument prefixDelegate can lead to buffer overflow. The identification of this vulnerability is CVE-2021-45392. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability has been found in Tenda AX12 22.03.01.21_CN and classified as problematic. This vulnerability affects the function sub_422CE4 of the file /goform/setIPv6Status. The manipulation of the argument prefixDelegate with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect availability.

The weakness was shared 02/14/2022. The advisory is available at github.com. This vulnerability was named CVE-2021-45392 since 12/20/2021. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

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

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Productinfo

Type

Router Operating System

Vendor

Tenda

Name

AX12

Version

22.03.01.21_CN

License

commercial

Website

Vendor: https://www.tenda.com.cn/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.5
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.5
VulDB Temp Score: 3.2
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: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/20/2021 🔍
02/14/2022 +56 days 🔍
02/14/2022 +0 days 🔍
02/17/2022 +3 days 🔍

Sourcesinfo

Vendor: tenda.com.cn

Advisory: github.com
Status: Not defined

CVE: CVE-2021-45392 (🔍)
GCVE (CVE): GCVE-0-2021-45392
GCVE (VulDB): GCVE-100-193054
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 02/14/2022 20:40
Updated: 02/17/2022 17:10
Changes: 02/14/2022 20:40 (42), 02/17/2022 17:10 (1)
Complete: 🔍
Cache ID: 216::103