CVE-2023-33625

published 2023-06-12

CVE-2023-33625: D-Link DIR-600 Hardware Version B5, Firmware Version 2.18 was discovered to contain a command injection vulnerability via the ST parameter in the…

Priority P1 80 critical 9.8 CVSS 3.1

AV N AC L PR N UI N S U C H I H A H

EXPLOIT

D-Link DIR-600 Hardware Version B5, Firmware Version 2.18 was discovered to contain a command injection vulnerability via the ST parameter in the lxmldbc_system() function.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
dlink	dir-600_firmware	—	—

Detection & IOCs extracted from sources · hover to see the quote

port 1900↗

command M-SEARCH (SSDP ST field injection)↗

• → Monitor UDP port 1900 for crafted M-SEARCH packets where the ST (Search Target) field contains shell metacharacters or command injection payloads targeting D-Link UPnP services. ↗
• → The exploitation results in a root-level shell; look for unexpected outbound connections or process spawning from the UPnP daemon (lxmldbc_system) on affected D-Link devices. ↗
• → The vulnerable code path is the lxmldbc_system() function processing the ST parameter — focus network/host inspection on UPnP M-SEARCH traffic to DIR-600 B5 fw 2.18 and related models. ↗

• · Staged Meterpreter payloads may crash the target device; stageless payloads should be used when testing with the Linux Dropper target. ↗
• · Some affected D-Link devices lack the `wget` binary; the echo cmdstager flavor must be used as a fallback for payload delivery. ↗

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