CVE-2020-13390
There is a buffer overflow vulnerability in the router's web server -- httpd.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.55%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered on Tenda AC6 V1.0 V15.03.05.19_multi_TD01, AC9 V1.0 V15.03.05.19(6318)_CN, AC9 V3.0 V15.03.06.42_multi, AC15 V1.0 V15.03.05.19_multi_TD01, 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 /goform/addressNat entrys and mitInterface parameters for a POST request, a value is directly used in a sprintf to a local variable placed on the stack, which overwrites the return address of a function. An attacker can construct a payload to carry out arbitrary code execution attacks.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.55% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- tendacn/ac6 firmware · tendacn/ac9 firmware · tendacn/ac15 firmware · tendacn/ac18 firmware
- Source
- cve@mitre.org
References
- https://joel-malwarebenchmark.github.ioExploit, Third Party Advisory
- https://joel-malwarebenchmark.github.io/blog/2020/04/28/cve-2020-13390-Tenda-vulnerability/Exploit, Third Party Advisory
- https://joel-malwarebenchmark.github.ioExploit, Third Party Advisory
- https://joel-malwarebenchmark.github.io/blog/2020/04/28/cve-2020-13390-Tenda-vulnerability/Exploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.