CVE-2021-42659 — MEDIUM (6.5)

Vulnerability Description

There is a buffer overflow vulnerability in the Web server httpd of the router in Tenda router devices such as Tenda AC9 V1.0 V15.03.02.19(6318) and Tenda AC9 V3.0 V15.03.06.42_multi. When setting the virtual service, the httpd program will crash and exit when the super-long list parameter occurs.

CVSS Score

6.5

MEDIUM

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Tenda	Ac9 Firmware	15.03.05.19\(6318\)
Tenda	Ac9	1.0

Related Weaknesses (CWE)

CWE-119

References

https://github.com/Lyc-heng/routers/blob/main/routers/stack4.mdExploitThird Party Advisory
https://www.cnvd.org.cn/flaw/show/CNVD-2021-24948Third Party Advisory
https://github.com/Lyc-heng/routers/blob/main/routers/stack4.mdExploitThird Party Advisory
https://www.cnvd.org.cn/flaw/show/CNVD-2021-24948Third Party Advisory

FAQ

What is CVE-2021-42659?

CVE-2021-42659 is a vulnerability with a CVSS score of 6.5 (MEDIUM). There is a buffer overflow vulnerability in the Web server httpd of the router in Tenda router devices such as Tenda AC9 V1.0 V15.03.02.19(6318) and Tenda AC9 V3.0 V15.03.06.42_multi. When setting the...

How severe is CVE-2021-42659?

CVE-2021-42659 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-42659?

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