VDB-189153 · CVE-2021-45527 · PSV-2020-0437

Netgear RBK852 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.
8.6	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Netgear D6220, D6400, D7000v2, D8500, DC112A, EX7000, EX7500, R6250, R6300v2, R6400, R6400v2, R6700v3, R7000, R7100LG, R7850, R7900, R7960P, R8000, RAX200, RBS40V, RS400, XR300, R7000P, R8000P, R8500, RAX80, R6900P, R7900P, R8300, RAX75, RBR750, RBR850, RBS750, RBS850, RBK752 and RBK852. This affects an unknown function. Performing a manipulation results in buffer overflow. This vulnerability was named CVE-2021-45527. The attack needs to be approached within the local network. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Netgear D6220, D6400, D7000v2, D8500, DC112A, EX7000, EX7500, R6250, R6300v2, R6400, R6400v2, R6700v3, R7000, R7100LG, R7850, R7900, R7960P, R8000, RAX200, RBS40V, RS400, XR300, R7000P, R8000P, R8500, RAX80, R6900P, R7900P, R8300, RAX75, RBR750, RBR850, RBS750, RBS850, RBK752 and RBK852 (Wireless LAN Software). This affects some unknown processing. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 12/26/2021 as PSV-2020-0437. The advisory is shared at kb.netgear.com. This vulnerability is uniquely identified as CVE-2021-45527 since 12/25/2021. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/26/2021).

Upgrading eliminates this vulnerability.

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

Productinfo

Type

Wireless LAN Software

Vendor

Netgear

Name

License

commercial

Website

Vendor: https://www.netgear.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.6

VulDB Base Score: 8.0
VulDB Temp Score: 7.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 9.6
CNA Vector (MITRE): 🔍

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: 🔍
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

12/25/2021 🔍
12/26/2021 +1 days 🔍
12/26/2021 +0 days 🔍
12/28/2021 +2 days 🔍

Sourcesinfo

Vendor: netgear.com

Advisory: PSV-2020-0437
Status: Confirmed

CVE: CVE-2021-45527 (🔍)
GCVE (CVE): GCVE-0-2021-45527
GCVE (VulDB): GCVE-100-189153

Entryinfo

Created: 12/26/2021 10:23
Updated: 12/28/2021 07:40
Changes: 12/26/2021 10:23 (48), 12/28/2021 07:40 (1)
Complete: 🔍
Cache ID: 216::103