PT-2022-1647 · D Link · D-Link Dir-846

Published 2022-02-17 · Updated 2022-07-12 · CVE-2021-46314

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-846 versions DIR846A1 FW100A43.bin through DIR846enFW100A53DLA-Retail.bin

Description The issue is related to insufficient argument validation in the HNAP1/control/SetNetworkTomographySettings.php script, allowing a remote attacker to execute arbitrary commands using a specially crafted request. This can be achieved by exploiting the use of backticks for command injection when validating domain names.

Recommendations For D-Link DIR-846 versions DIR846A1 FW100A43.bin through DIR846enFW100A53DLA-Retail.bin, consider disabling access to the HNAP1/control/SetNetworkTomographySettings.php script as a temporary workaround until a patch is available. Restrict the use of backticks in domain name validation to minimize the risk of command injection. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

BDU:2022-00896

CVE-2021-46314

Affected Products

D-Link Dir-846

References · 7

• 🔥 https://github.com/doudoudedi/DIR-846_Command_Injection/blob/main/DIR-846_Command_Injection1.md · Exploit
• https://bdu.fstec.ru/vul/2022-00896 · Security Note
• https://dlink.com/en/security-bulletin · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-46314 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-46314 · Security Note
• https://t.me/cvenotify/26942 · Telegram Post
• https://t.me/cibsecurity/37681 · Telegram Post