CVE-2018-14559

25.04.2019, 20:29

An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A buffer overflow vulnerability exists in the router's web server (httpd). When processing the list parameters for a post request, the value is directly written with sprintf to a local variable placed on the stack, which overrides the return address of the function, causing a buffer overflow.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitre	CNA	---				---
CVE	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 53%

Vendor	Product	Version
tenda	ac7_firmware	𝑥 ≤ 15.03.06.44_cn
tenda	ac9_firmware	𝑥 ≤ 15.03.05.19\(6318\)_cn
tenda	ac10_firmware	𝑥 ≤ 15.03.06.23_cn

𝑥

= Vulnerable software versions

Known Exploits!

Common Weakness Enumeration

CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer
The software performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer.

References

https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-02/Tenda.md