PT-2022-1550 · D Link · D-Link Dir-823-Pro

Published 2022-01-24 · Updated 2022-03-09 · CVE-2021-46456

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions D-Link DIR-823-Pro version 1.0.2

Description The issue is related to a command injection vulnerability in the SetWLanACLSettings() function. This vulnerability allows attackers to execute arbitrary commands via the wl(0).(0) maclist parameter. The vulnerability is caused by insufficient input validation when processing the wl(0).(0) maclist parameter, which can be exploited by a remote attacker to execute arbitrary commands.

Recommendations For D-Link DIR-823-Pro version 1.0.2, as a temporary workaround, consider disabling the SetWLanACLSettings() function until a patch is available. Restrict access to the wl(0).(0) maclist parameter to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

BDU:2022-00765

CVE-2021-46456

Affected Products

D-Link Dir-823-Pro

References · 8

• 🔥❌ https://github.com/pjqwudi/my_vuln/blob/main/D-link/vuln_26/26.md · Exploit, Deleted
• https://dlink.com/en/security-bulletin · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46456 · Security Note
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10285 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-00765 · Security Note
• https://osv.dev/vulnerability/CVE-2021-46456 · Vendor Advisory
• https://vuldb.com/ru/?id.192250 · Note
• https://t.me/cvenotify/26225 · Telegram Post