PT-2020-5981 · D Link · D-Link Dir-816L

Published 2020-07-22 · Updated 2023-11-08 · CVE-2020-15893

Positive Technologies (AI Summary)

CVSS v3.1

10

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-816L versions 2.x before 1.10b04Beta02

Description An issue exists in the Universal Plug and Play (UPnP) component of the D-Link DIR-816L device, where UPnP is enabled by default on port 1900. This allows an attacker to perform command injection by injecting a payload into the Search Target (ST) field of the SSDP M-SEARCH discover packet. The vulnerability can be exploited by a remote attacker to execute arbitrary commands.

Recommendations For D-Link DIR-816L versions 2.x before 1.10b04Beta02, update to version 1.10b04Beta02 or later to resolve the issue. As a temporary workaround, consider disabling the UPnP feature on port 1900 to minimize the risk of exploitation. Restrict access to the SSDP M-SEARCH discover packet to prevent command injection attacks. Avoid using the Search Target (ST) field in the SSDP M-SEARCH packet until the issue is resolved.

Exploit

Fix

XSS

OS Command Injection

Weakness Enumeration

CWE-79

CWE-78

Related Identifiers

BDU:2021-02274

CVE-2020-15893

Affected Products

D-Link Dir-816L

References · 7

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/upnp/dlink_upnp_msearch_exec.rb · Exploit
• 🔥 https://research.loginsoft.com/bugs/multiple-vulnerabilities-discovered-in-the-d-link-firmware-dir-816l · Exploit
• https://bdu.fstec.ru/vul/2021-02274 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-15893 · Security Note
• https://osv.dev/vulnerability/CVE-2020-15893 · Vendor Advisory
• https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10169 · Vendor Advisory
• https://xakep.ru/2020/07/27/d-link-vulnerabilities · Note