PT-2022-19982 · Tenda · Tenda Ax1803

Le1A · Published 2022-05-11 · Updated 2022-05-20 · CVE-2022-30040

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Tenda AX1803 version 1.0.0.1 2890

Description The issue is related to a Buffer Overflow that can cause a denial of service in the router. It is located in the /goform/setsystimecfg endpoint of the /bin/tdhttpd in the ubif file system. Attackers can access the endpoint via http://ip/goform/SetSysTimeCfg and exploit the ntpserve parameter to trigger a stack buffer overflow.

Recommendations For Tenda AX1803 version 1.0.0.1 2890, as a temporary workaround, consider restricting access to the /goform/setsystimecfg endpoint until a patch is available. Avoid using the ntpserve parameter in the affected endpoint to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2022-30040

Affected Products

Tenda Ax1803

References · 4

• 🔥 https://github.com/Le1a/Tenda-AX1803-Denial-of-service · Exploit
• 🔥 https://github.com/Le1a/CVE-2022-30040 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2022-30040 · Security Note
• https://osv.dev/vulnerability/CVE-2022-30040 · Vendor Advisory