Vulnerability · Published Aug 1, 2024 · Assigned by VulDB

CVE-2024-7331TOTOLINK A3300R cstecgi.cgi UploadCustomModule buffer overflow

High 8.8

In plain English

A high-severity buffer overflow in A3300R from TOTOLINK. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)1.2%top 31.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was found in TOTOLINK A3300R 17.0.0cu.557_B20221024 and classified as critical. Affected by this issue is the function UploadCustomModule of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument File leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-273254 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Affected products (as reported)

Vendor	Product	Versions
TOTOLINK	A3300R	17.0.0cu.557_B20221024

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

References

VDB-273254 | TOTOLINK A3300R cstecgi.cgi UploadCustomModule buffer overflow vdb-entry, technical-description
VDB-273254 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
Submit #378351 | TOTOLINK A3300R V17.0.0cu.557_B20221024 Buffer Overflow third-party-advisory
https://github.com/abcdefg-png/IoT-vulnerable/blob/main/TOTOLINK/A3300R/UploadCustomModule.md exploit