VDB-187709 · CVE-2021-42980 · GCVE-0-2021-42980

NoMachine Cloud Server up to 7.7.3 IOCTL 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.
8.1	$0-$5k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in NoMachine Cloud Server up to 7.7.3. Impacted is an unknown function of the component IOCTL Handler. The manipulation leads to buffer overflow. This vulnerability is traded as CVE-2021-42980. An attack has to be approached locally. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in NoMachine Cloud Server up to 7.7.3 (Cloud Software) and classified as critical. This issue affects an unknown code of the component IOCTL Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The weakness was shared 12/08/2021. The advisory is shared at sentinelone.com. The identification of this vulnerability is CVE-2021-42980 since 10/25/2021. Neither technical details nor an exploit are publicly available.

Upgrading to version 7.7.4 eliminates this vulnerability.

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

Productinfo

Type

Cloud Software

Vendor

NoMachine

Name

Cloud Server

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.1

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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: 🔍

Upgrade: Cloud Server 7.7.4

Timelineinfo

10/25/2021 🔍
12/08/2021 +44 days 🔍
12/08/2021 +0 days 🔍
12/11/2021 +2 days 🔍

Sourcesinfo

Advisory: sentinelone.com
Status: Confirmed

CVE: CVE-2021-42980 (🔍)
GCVE (CVE): GCVE-0-2021-42980
GCVE (VulDB): GCVE-100-187709

Entryinfo

Created: 12/08/2021 08:06
Updated: 12/11/2021 00:00
Changes: 12/08/2021 08:06 (40), 12/10/2021 23:51 (1), 12/11/2021 00:00 (18)
Complete: 🔍
Cache ID: 216::103