PT-2022-5539 · D Link · D-Link Dir-1935

Published 2022-06-14 · Updated 2023-11-08 · CVE-2022-43619

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 issue, the existing authentication mechanism can be bypassed. The specific flaw exists within the handling of ConfigFileUpload requests to the web management portal, specifically due to the lack of proper validation of a user-supplied string before using it as a format specifier. An attacker can leverage this issue to execute code in the context of root.

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

Fix

Use of Externally-Controlled Format String

Weakness Enumeration

CWE-134

Related Identifiers

BDU:2022-06868

CVE-2022-43619

ZDI-22-1493

Affected Products

D-Link Dir-1935

References · 7

• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10310 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-43619 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-22-1493 · Security Note
• https://osv.dev/vulnerability/CVE-2022-43619 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-06868 · Security Note
• https://vuldb.com/?ctiid.212988 · Note
• https://t.me/cvenotify/47683 · Telegram Post