Vulnerability Details : CVE-2020-13389
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/openSchedWifi schedStartTime and schedEndTime parameters for a POST request, a value is directly used in a strcpy 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.
Vulnerability category: Overflow
Exploit prediction scoring system (EPSS) score for CVE-2020-13389
Probability of exploitation activity in the next 30 days: 0.49%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 73 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-13389
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2020-13389
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-13389
-
https://joel-malwarebenchmark.github.io/blog/2020/04/28/cve-2020-13389-Tenda-vulnerability/
CVE-2020-13389: Tenda Vulnerability - JoelThird Party Advisory
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https://joel-malwarebenchmark.github.io
JoelExploit;Third Party Advisory
Products affected by CVE-2020-13389
- cpe:2.3:o:tendacn:ac15_firmware:v15.03.05.19_multi_td01:*:*:*:*:*:*:*
- cpe:2.3:o:tendacn:ac9_firmware:v15.03.05.19\(6318\):*:*:*:*:*:*:*
- cpe:2.3:o:tendacn:ac9_firmware:v15.03.06.42_multi:*:*:*:*:*:*:*
- cpe:2.3:o:tendacn:ac18_firmware:v15.03.05.19\(6318\):*:*:*:*:*:*:*
- cpe:2.3:o:tendacn:ac6_firmware:v15.03.05.19_multi_td01:*:*:*:*:*:*:*