PT-2018-14605 · Tenda · Tenda Ac10+4

Ming Yuan · Published 2018-10-28 · Updated 2018-12-14 · CVE-2018-18727

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 deviceList parameter for a post request. The value of this parameter is directly used in a strcpy 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, update the firmware to a version that addresses this issue. For Tenda AC9 version 15.03.05.19(6318) CN, update the firmware to a version that addresses this issue. For Tenda AC10 version 15.03.06.23 CN, update the firmware to a version that addresses this issue. For Tenda AC15 version 15.03.05.19 CN, update the firmware to a version that addresses this issue. For Tenda AC18 version 15.03.05.19(6318) CN, update the firmware to a version that addresses this issue. As a temporary workaround, consider restricting access to the httpd service until a patch is available. Avoid using the deviceList parameter in post requests to the affected router's web server until the issue is resolved.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2018-18727

Affected Products

Tenda Ac10

Tenda Ac15

Tenda Ac18

Tenda Ac7

Tenda Ac9

References · 3

• 🔥 https://github.com/ZIllR0/Routers/blob/master/Tenda/stack1.md · Exploit
• https://osv.dev/vulnerability/CVE-2018-18727 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-18727 · Security Note