Buffer overflow in Totolink A7100ru
CVE-2023-6906
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.018 (78.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 78.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- Totolink A7100ru — versions 7.4cu.2313_B20191024
- Totolink A7100ru Firmware — versions 7.4cu.2313_b20191024
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, Third Party Advisory)
- github.com/unpWn4bL3/iot-security/blob/main/1.md (Exploit, Third Party Advisory, exploit)
Frequently asked questions
- What is CVE-2023-6906?
- CVE-2023-6906 is a critical-severity vulnerability in Totolink A7100ru, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2023-12-18.
- How severe is CVE-2023-6906?
- Critical severity. CVSS v3 base score is 9.8 out of 10.