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Vulnerability Details :

CVE-2021-20153

Summary
Assigner-tenable
Assigner Org ID-5ac1ecc2-367a-4d16-a0b2-35d495ddd0be
Published At-30 Dec, 2021 | 21:31
Updated At-03 Aug, 2024 | 17:30
Rejected At-
Credits

Trendnet AC2600 TEW-827DRU version 2.08B01 contains a symlink vulnerability in the bittorrent functionality. If enabled, the bittorrent functionality is vulnerable to a symlink attack that could lead to remote code execution on the device. If an end user inserts a flash drive with a malicious symlink on it that the bittorrent client can write downloads to, then a user is able to download arbitrary files to any desired location on the devices filesystem, which could lead to remote code execution. Example directories vulnerable to this include "config", "downloads", and "torrents", though it should be noted that "downloads" is the only vector that allows for arbitrary files to be downloaded to arbitrary locations.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:tenable
Assigner Org ID:5ac1ecc2-367a-4d16-a0b2-35d495ddd0be
Published At:30 Dec, 2021 | 21:31
Updated At:03 Aug, 2024 | 17:30
Rejected At:
▼CVE Numbering Authority (CNA)

Trendnet AC2600 TEW-827DRU version 2.08B01 contains a symlink vulnerability in the bittorrent functionality. If enabled, the bittorrent functionality is vulnerable to a symlink attack that could lead to remote code execution on the device. If an end user inserts a flash drive with a malicious symlink on it that the bittorrent client can write downloads to, then a user is able to download arbitrary files to any desired location on the devices filesystem, which could lead to remote code execution. Example directories vulnerable to this include "config", "downloads", and "torrents", though it should be noted that "downloads" is the only vector that allows for arbitrary files to be downloaded to arbitrary locations.

Affected Products
Vendor
n/a
Product
Trendnet AC2600 TEW-827DRU
Versions
Affected
  • 2.08B01
Problem Types
TypeCWE IDDescription
textN/AUNIX Symbolic Link Following
Type: text
CWE ID: N/A
Description: UNIX Symbolic Link Following
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://www.tenable.com/security/research/tra-2021-54
x_refsource_MISC
Hyperlink: https://www.tenable.com/security/research/tra-2021-54
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CVE Program Container
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://www.tenable.com/security/research/tra-2021-54
x_refsource_MISC
x_transferred
Hyperlink: https://www.tenable.com/security/research/tra-2021-54
Resource:
x_refsource_MISC
x_transferred
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:vulnreport@tenable.com
Published At:30 Dec, 2021 | 22:15
Updated At:07 Jan, 2022 | 16:27

Trendnet AC2600 TEW-827DRU version 2.08B01 contains a symlink vulnerability in the bittorrent functionality. If enabled, the bittorrent functionality is vulnerable to a symlink attack that could lead to remote code execution on the device. If an end user inserts a flash drive with a malicious symlink on it that the bittorrent client can write downloads to, then a user is able to download arbitrary files to any desired location on the devices filesystem, which could lead to remote code execution. Example directories vulnerable to this include "config", "downloads", and "torrents", though it should be noted that "downloads" is the only vector that allows for arbitrary files to be downloaded to arbitrary locations.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.16.8MEDIUM
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary2.06.9MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C
Type: Primary
Version: 3.1
Base score: 6.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: Primary
Version: 2.0
Base score: 6.9
Base severity: MEDIUM
Vector:
AV:L/AC:M/Au:N/C:C/I:C/A:C
CPE Matches

TRENDnet, Inc.
trendnet
>>tew-827dru_firmware>>2.08b01
cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:*:*:*:*:*:*:*
TRENDnet, Inc.
trendnet
>>tew-827dru>>2.0
cpe:2.3:h:trendnet:tew-827dru:2.0:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-59Primarynvd@nist.gov
CWE ID: CWE-59
Type: Primary
Source: nvd@nist.gov
Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References
HyperlinkSourceResource
https://www.tenable.com/security/research/tra-2021-54vulnreport@tenable.com
Third Party Advisory
Hyperlink: https://www.tenable.com/security/research/tra-2021-54
Source: vulnreport@tenable.com
Resource:
Third Party Advisory

Change History

0
Information is not available yet

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