PT-2020-20399 · D Link · D-Link Dir-842

Published 2020-02-13 · Updated 2020-02-18 · CVE-2020-8962

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions D-Link DIR-842 REVC version v3.13B09 HOTFIX

Description A stack-based buffer overflow issue was discovered due to the use of strcpy for LOGINPASSWORD when handling a POST request to the "/MTFWU" endpoint.

Recommendations For D-Link DIR-842 REVC version v3.13B09 HOTFIX, as a temporary workaround, consider disabling the use of strcpy for LOGINPASSWORD in the "/MTFWU" endpoint until a patch is available. Restrict access to the "/MTFWU" endpoint to minimize the risk of exploitation. Avoid using the LOGINPASSWORD variable in the affected endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2020-8962

Affected Products

D-Link Dir-842

References · 4

• 🔥 https://ctrsec.io/index.php/2020/02/12/cve-2020-8962-d-link-dir-842-stack-based-buffer-overflow · Exploit
• https://osv.dev/vulnerability/CVE-2020-8962 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-8962 · Security Note
• https://t.me/cvenotify/988 · Telegram Post