QNAP NAS Surveillance Station stack-based 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.
9.4	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in QNAP NAS. This vulnerability affects unknown code of the component Surveillance Station. The manipulation results in stack-based overflow. This vulnerability is reported as CVE-2021-28797. The attack can be launched remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in QNAP NAS (Network Attached Storage Software) (the affected version unknown). It has been classified as very critical. Affected is an unknown part of the component Surveillance Station. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability.

The weakness was disclosed 04/14/2021 as qsa-21-07. The advisory is available at qnap.com. This vulnerability is traded as CVE-2021-28797. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 04/17/2021).

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Productinfo

Type

Network Attached Storage Software

Vendor

QNAP

Name

License

commercial

Website

Vendor: https://www.qnap.com/

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

03/18/2021 🔍
04/14/2021 +26 days 🔍
04/14/2021 +0 days 🔍
04/17/2021 +3 days 🔍

Sourcesinfo

Vendor: qnap.com

Advisory: qsa-21-07
Status: Confirmed

CVE: CVE-2021-28797 (🔍)
GCVE (CVE): GCVE-0-2021-28797
GCVE (VulDB): GCVE-100-173022

Entryinfo

Created: 04/14/2021 13:04
Updated: 04/17/2021 20:19
Changes: 04/14/2021 13:04 (38), 04/17/2021 20:15 (5), 04/17/2021 20:19 (1)
Complete: 🔍
Cache ID: 216::103