Vulnerability · Published Dec 18, 2023 · Assigned by VulDB

CVE-2023-6906Totolink A7100RU HTTP POST Request main buffer overflow

Critical 9.8

In plain English

A critical-severity buffer overflow in A7100RU from Totolink. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 79% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)1.8%top 20.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Totolink	A7100RU	7.4cu.2313_B20191024

Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

https://vuldb.com/?id.248268 vdb-entry, technical-description
https://vuldb.com/?ctiid.248268 signature, permissions-required
https://github.com/unpWn4bL3/iot-security/blob/main/1.md exploit