CVE-2018-18731 — HIGH (7.5)

Vulnerability Description

An issue was discovered on Tenda AC7 V15.03.06.44_CN, AC9 V15.03.05.19(6318)_CN, AC10 V15.03.06.23_CN, AC15 V15.03.05.19_CN, and AC18 V15.03.05.19(6318)_CN devices. There is a buffer overflow vulnerability in the router's web server -- httpd. While processing the 'deviceMac' parameter for a post request, the value is directly used in a sprintf to a local variable placed on the stack, which overrides the return address of the function.

CVSS Score

7.5

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Tenda	Ac7 Firmware	15.03.06.44_cn
Tenda	Ac7	-
Tenda	Ac9 Firmware	15.03.05.19\(6318\)_cn
Tenda	Ac9	-
Tenda	Ac10 Firmware	15.03.06.23_cn
Tenda	Ac10	-
Tenda	Ac15 Firmware	15.03.05.19_cn
Tenda	Ac15	-
Tenda	Ac18 Firmware	15.03.05.19\(6318\)_cn
Tenda	Ac18	-

Related Weaknesses (CWE)

CWE-119

References

https://github.com/ZIllR0/Routers/blob/master/Tenda/stack4.mdExploitThird Party Advisory
https://github.com/ZIllR0/Routers/blob/master/Tenda/stack4.mdExploitThird Party Advisory

FAQ

What is CVE-2018-18731?

CVE-2018-18731 is a vulnerability with a CVSS score of 7.5 (HIGH). An issue was discovered on Tenda AC7 V15.03.06.44_CN, AC9 V15.03.05.19(6318)_CN, AC10 V15.03.06.23_CN, AC15 V15.03.05.19_CN, and AC18 V15.03.05.19(6318)_CN devices. There is a buffer overflow vulnerab...

How severe is CVE-2018-18731?

CVE-2018-18731 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-18731?

Check the references section above for vendor advisories and patch information. Affected products include: Tenda Ac7 Firmware, Tenda Ac7, Tenda Ac9 Firmware, Tenda Ac9, Tenda Ac10 Firmware.