CVE-2021-20153

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.
References
Link Resource
https://www.tenable.com/security/research/tra-2021-54 Third Party Advisory
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Configurations

Configuration 1 (hide)

AND
cpe:2.3:o:trendnet:tew-827dru_firmware:2.08b01:*:*:*:*:*:*:*
cpe:2.3:h:trendnet:tew-827dru:2.0:*:*:*:*:*:*:*

Information

Published : 2021-12-30 14:15

Updated : 2022-01-07 08:27


NVD link : CVE-2021-20153

Mitre link : CVE-2021-20153


JSON object : View

CWE
CWE-59

Improper Link Resolution Before File Access ('Link Following')

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Products Affected

trendnet

  • tew-827dru_firmware
  • tew-827dru