PT-2020-11202 · D Link · D-Link Dir-822

Mingeun Kim · Published 2020-08-18 · Updated 2023-04-26 · CVE-2019-6258

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-822 Rev.Bx devices with firmware version 202KRb06 and older

Description The issue concerns a buffer overflow that can occur when handling long MacAddress data in a "HNAP1/SetClientInfo" HNAP protocol message. This message is mishandled by the /usr/sbin/udhcpd process during the reading of the /var/servd/LAN-1-udhcpd.conf file.

Recommendations For D-Link DIR-822 Rev.Bx devices with firmware version 202KRb06 and older, consider updating the firmware to a version newer than 202KRb06 to resolve the issue. As a temporary workaround, restrict access to the /HNAP1/SetClientInfo API endpoint to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2019-6258

Affected Products

D-Link Dir-822

References · 4

• 🔥 https://github.com/pr0v3rbs/CVE/tree/master/CVE-2019-6258 · Exploit
• https://osv.dev/vulnerability/CVE-2019-6258 · Vendor Advisory
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10175 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-6258 · Security Note