9.8
CRITICAL
CVE-2021-34346
QNAP NVR Storage Expansion Stack Buffer Overflow
Description

A stack buffer overflow vulnerability has been reported to affect QNAP device running NVR Storage Expansion. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of NVR Storage Expansion: NVR Storage Expansion 1.0.6 ( 2021/08/03 ) and later

INFO

Published Date :

Sept. 10, 2021, 4:15 a.m.

Last Modified :

Feb. 10, 2022, 7:45 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-34346 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Qnap nvr_storage_expansion_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-34346.

URL Resource
https://www.qnap.com/en/security-advisory/qsa-21-36 Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-34346 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-34346 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Feb. 10, 2022

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jan. 03, 2022

    Action Type Old Value New Value
    Removed CWE QNAP Systems, Inc. CWE-120
    Added CWE QNAP Systems, Inc. CWE-787
    Removed CWE Reason CWE-120 / More specific CWE option available
  • Initial Analysis by [email protected]

    Sep. 23, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://www.qnap.com/en/security-advisory/qsa-21-36 No Types Assigned https://www.qnap.com/en/security-advisory/qsa-21-36 Vendor Advisory
    Added CWE NIST CWE-787
    Added CPE Configuration AND OR *cpe:2.3:o:qnap:nvr_storage_expansion_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.6 OR cpe:2.3:h:qnap:nvr_storage_expansion:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Sep. 10, 2021

    Action Type Old Value New Value
    Changed Description A stack buffer overflow vulnerability has been reported to affect QNAP device running NVR Storage Expansion. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of NVR Storage Expansion: NVR Storage Expansion 1.0.6 ( 2021/08/03 ) and later A stack buffer overflow vulnerability has been reported to affect QNAP device running NVR Storage Expansion. If exploited, this vulnerability allows attackers to execute arbitrary code. We have already fixed this vulnerability in the following versions of NVR Storage Expansion: NVR Storage Expansion 1.0.6 ( 2021/08/03 ) and later
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-34346 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-34346 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.34 }} 0.02%

score

0.72035

percentile

CVSS31 - Vulnerability Scoring System
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