cbcvebase.
CVE-2021-42887
published 2022-06-03

CVE-2021-42887: In TOTOLINK EX1200T V4.1.2cu.5215, an attacker can bypass login by sending a specific request through formLoginAuth.htm.

PriorityP275critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EXPLOIT
EPSS
42.85%
98.5th percentile
In TOTOLINK EX1200T V4.1.2cu.5215, an attacker can bypass login by sending a specific request through formLoginAuth.htm.

Affected

1 ranges
VendorProductVersion rangeFixed in
totolinkex1200t_firmware——

Detection & IOCsextracted from sources · hover to see the quote

url/formLoginAuth.htm?authCode=1&userName=admin&goURL=&action=login↗
path/formLoginAuth.htm↗
  • →Authentication bypass is triggered via a GET request to /formLoginAuth.htm with the parameter authCode=1. A successful bypass results in an HTTP 302 redirect response containing a Set-Cookie header with SESSION_ID=. ↗
  • →Detect exploitation by monitoring for HTTP 302 responses to /formLoginAuth.htm requests that include a Set-Cookie: SESSION_ID= header, indicating a successful authentication bypass. ↗
  • →Shodan/FOFA exposure queries for vulnerable devices: search for title 'TOTOLINK' or 'totolink' to identify internet-exposed instances. ↗
  • ·The vulnerability is specific to TOTOLINK EX1200T firmware version 4.1.2cu.5215 only. Other firmware versions are not confirmed affected. ↗

CVSS provenance

nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
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