CVE-2021-44052
QNAP Link Following Vulnerability (Remote File System Traversal)
Description
An improper link resolution before file access ('Link Following') vulnerability has been reported to affect QNAP device running QuTScloud, QuTS hero, and QTS. If exploited, this vulnerability allows remote attackers to traverse the file system to unintended locations and read or overwrite the contents of unexpected files. We have already fixed this vulnerability in the following versions of QuTScloud, QuTS hero, and QTS: QuTScloud c5.0.1.1998 and later QuTS hero h4.5.4.1971 build 20220310 and later QuTS hero h5.0.0.1986 build 20220324 and later QTS 4.3.4.1976 build 20220303 and later QTS 4.3.3.1945 build 20220303 and later QTS 4.2.6 build 20220304 and later QTS 4.3.6.1965 build 20220302 and later QTS 5.0.0.1986 build 20220324 and later QTS 4.5.4.1991 build 20220329 and later
INFO
Published Date :
May 5, 2022, 5:15 p.m.
Last Modified :
Nov. 14, 2023, 7:26 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.2
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2021-44052
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.
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-2021-44052.
| URL | Resource |
|---|---|
| https://www.qnap.com/en/security-advisory/qsa-22-16 | 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-2021-44052 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-44052 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 -
Initial Analysis by [email protected]
May. 13, 2022
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:P/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Changed Reference Type https://www.qnap.com/en/security-advisory/qsa-22-16 No Types Assigned https://www.qnap.com/en/security-advisory/qsa-22-16 Vendor Advisory Added CWE NIST CWE-59 Added CPE Configuration OR *cpe:2.3:a:qnap:qts:4.2.6:build_20170517:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:4.2.6:build_20190322:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:4.2.6:build_20190730:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:4.2.6:build_20190921:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:4.2.6:build_20191107:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:4.2.6:build_20200109:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:4.2.6:build_20200421:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:4.2.6:build_20200611:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:4.2.6:build_20200821:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:4.2.6:build_20210327:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:4.2.6:build_20211215:*:*:*:*:*:* *cpe:2.3:a:qnap:qts:*:*:*:*:*:*:*:* versions from (including) 4.3.3.0174 up to (excluding) 4.3.3.1945 *cpe:2.3:a:qnap:qts:*:*:*:*:*:*:*:* versions from (including) 4.3.4.0899 up to (excluding) 4.3.4.1976 *cpe:2.3:a:qnap:qts:*:*:*:*:*:*:*:* versions from (including) 4.3.6.0895 up to (excluding) 4.3.6.1965 *cpe:2.3:a:qnap:qts:*:*:*:*:*:*:*:* versions from (including) 4.4.0.0883 up to (excluding) 4.5.4.1991 *cpe:2.3:a:qnap:qts:*:*:*:*:*:*:*:* versions from (including) 5.0.0.1716 up to (excluding) 5.0.0.1986 *cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:* versions up to (excluding) h4.5.4.1771 *cpe:2.3:o:qnap:quts_hero:*:*:*:*:*:*:*:* versions from (including) h5.0.0.1772 up to (excluding) h5.0.0.1986 *cpe:2.3:o:qnap:qutscloud:*:*:*:*:*:*:*:* versions up to (excluding) c5.0.1.1998
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-44052 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-2021-44052
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.14 }} 0.01%
score
0.49841
percentile