PT-2018-14609 · Tenda · Tenda Ac10+4

Ming Yuan · Published 2018-10-28 · Updated 2019-01-29 · CVE-2018-18731

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions Tenda AC7 version 15.03.06.44 CN Tenda AC9 version 15.03.05.19(6318) CN Tenda AC10 version 15.03.06.23 CN Tenda AC15 version 15.03.05.19 CN Tenda AC18 version 15.03.05.19(6318) CN

Description A buffer overflow issue exists in the router's web server, specifically in the httpd. The problem arises when processing the deviceMac parameter for a post request. The value of this parameter is directly used in a sprintf to a local variable on the stack, which overrides the return address of the function.

Recommendations For Tenda AC7 version 15.03.06.44 CN, avoid using the deviceMac parameter in post requests to the httpd web server until a patch is available. For Tenda AC9 version 15.03.05.19(6318) CN, restrict access to the httpd web server to minimize the risk of exploitation. For Tenda AC10 version 15.03.06.23 CN, consider disabling the httpd web server temporarily until a fix is provided. For Tenda AC15 version 15.03.05.19 CN, refrain from using the vulnerable httpd web server until an update is released. For Tenda AC18 version 15.03.05.19(6318) CN, as a temporary workaround, limit the use of the deviceMac parameter in the httpd web server.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2018-18731

Affected Products

Tenda Ac10

Tenda Ac15

Tenda Ac18

Tenda Ac7

Tenda Ac9

References · 3

• 🔥 https://github.com/ZIllR0/Routers/blob/master/Tenda/stack4.md · Exploit
• https://osv.dev/vulnerability/CVE-2018-18731 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-18731 · Security Note