PT-2022-5541 · D Link · D-Link Dir-1935

Published 2022-07-22 · Updated 2023-11-08 · CVE-2022-43628

Positive Technologies (AI Summary)

CVSS v2.0

7.7

High

Base vector

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

Name of the Vulnerable Software and Affected Versions D-Link DIR-1935 version 1.03

Description This issue allows network-adjacent attackers to execute arbitrary code on affected installations. Although authentication is required to exploit this, the existing authentication mechanism can be bypassed. The flaw exists within the handling of SetIPv6FirewallSettings requests to the web management portal, specifically when parsing subelements within the IPv6FirewallRule element. The process does not properly validate a user-supplied string before using it to execute a system call, allowing an attacker to execute code in the context of root.

Recommendations For D-Link DIR-1935 version 1.03, as a temporary workaround, consider disabling the SetIPv6FirewallSettings function until a patch is available. Restrict access to the web management portal to minimize the risk of exploitation. Avoid using the IPv6FirewallRule element in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

OS Command Injection

Command Injection

Weakness Enumeration

CWE-78

CWE-77

Related Identifiers

BDU:2022-06870

CVE-2022-43628

ZDI-22-1499

Affected Products

D-Link Dir-1935

References · 6

• https://bdu.fstec.ru/vul/2022-06870 · Security Note
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10310 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-43628 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-22-1499 · Security Note
• https://osv.dev/vulnerability/CVE-2022-43628 · Vendor Advisory
• https://t.me/cvenotify/47655 · Telegram Post