Home/CVE/A vulnerability, which was classified as critical, was found in Totolink A7100RU 7.4cu.2313_B20191024. Affected is the f
CVE

CVE-2023-6906

A vulnerability, which was classified as critical, was found in Totolink A7100RU 7.4cu.2313_B20191024. Affected is the f

A vulnerability, which was classified as critical, was found in Totolink A7100RU 7.4cu.2313_B20191024. Affected is the function main of the file /cgi-bin/cstecgi.cgi?action=login of the component HTTP POST Request Handler. The manipulation of the argument flag with the input ie8 leads to buffer overflow.

It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-248268.

NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

CRITICAL · CVSS 9.8 EPSS 0.00193
Act now
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
▤

Affected Products & Versions

1
totolink a7100ru firmwareall versions
⚠

Public Exploits & PoCs

1
pocgithub.com · 1.mdgithub.com
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cna@vuldb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD18 Dec 2023 · 04:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://vuldb.com/?ctiid.248268Permissions RequiredThird Party Advisory
https://vuldb.com/?id.248268Third Party Advisory
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