CVE-2020-13389 Details

CVE-2020-13389

Published: 2020-05-22
Last Modified: 2020-05-27
CVE Author: NIST National Vulnerability Database
CVE Assigner: cve@mitre.org
Summary

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.

Analysis
Common Vulnerability Score System v2.0
Severity High
Base Score 7.5/10
Exploit Score 10/10
Access Vector Network
Access Complexity Low
Authentication None
Impact Score 6.4/10
Confidentiality Impact Partial
Availability Impact Partial
Integrity Impact Partial
Vector String AV:N/AC:L/Au:N/C:P/I:P/A:P
Common Vulnerability Score System v3.1
Severity Critical
Base Score 9.8/10
Exploit Score 3.9/10
Access Vector Network
Access Complexity Low
Privileges Required None
Impact Score 5.9/10
Confidentiality Impact High
Availability Impact High
Integrity Impact High
Scope Unchanged
User Interaction None
Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Products Reported
CPE Vulnerable Start Excluding
cpe:2.3:o:tendacn:ac6_firmware:v15.03.05.19_multi_td01:*:*:*:*:*:*:* Yes - -
cpe:2.3:h:tendacn:ac6:1.0:*:*:*:*:*:*:* No - -
cpe:2.3:o:tendacn:ac9_firmware:v15.03.05.19\(6318\):*:*:*:*:*:*:* Yes - -
cpe:2.3:h:tendacn:ac9:1.0:*:*:*:*:*:*:* No - -
cpe:2.3:o:tendacn:ac15_firmware:v15.03.05.19_multi_td01:*:*:*:*:*:*:* Yes - -
cpe:2.3:h:tendacn:ac15:1.0:*:*:*:*:*:*:* No - -
cpe:2.3:o:tendacn:ac18_firmware:v15.03.05.19\(6318\):*:*:*:*:*:*:* Yes - -
cpe:2.3:h:tendacn:ac18:-:*:*:*:*:*:*:* No - -
cpe:2.3:o:tendacn:ac9_firmware:v15.03.06.42_multi:*:*:*:*:*:*:* Yes - -
cpe:2.3:h:tendacn:ac9:3.0:*:*:*:*:*:*:* No - -
References

https://joel-malwarebenchmark.github.io
https://joel-malwarebenchmark.github.io/blog/2020/04/28/cve-2020-13389-Tenda-vulnerability/

CVE ID
CVE-2020-13389
Published
2020-05-22
Modified
2020-05-27
CVSSv2.0
High
CVSSv3.1
Critical
PCI Compliance
Fail
US-CERT Alert
No
CWE
CWE-120

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