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Mallory
CriticalPublic exploit

Unauthenticated Command Injection in Billion 5200W-T Remote System Log

IdentifiersCVE-2017-18369CWE-78· Improper Neutralization of Special…

CVE-2017-18369 is a command injection vulnerability in the Billion 5200W-T router firmware version 1.02b.rc5.dt49 distributed by TrueOnline. The flaw exists in the Remote System Log forwarding functionality exposed through the adv_remotelog.asp page. An unauthenticated attacker can supply crafted input to the syslogServerAddr parameter, which is not properly sanitized before being used by the underlying system, allowing arbitrary OS command injection.

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For your environment

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an unauthenticated remote attacker to execute arbitrary commands on the affected router. This can result in full compromise of the device, including modification of configuration, installation of malware or botnet payloads, traffic interception or redirection, use of the router as a pivot point into the internal network, and disruption of network services.

Mitigation

If you can’t patch tonight, do this now.

Restrict administrative and management interface exposure so the router web interface is not reachable from untrusted networks or the public internet. Disable the Remote System Log forwarding feature if it is not required. Place the device behind trusted management networks only, enforce network ACLs to limit access to the web UI, and monitor the router for unexpected configuration changes or outbound connections that may indicate compromise.

Remediation

Patch, then assume compromise.

Upgrade the affected Billion 5200W-T firmware to a vendor-fixed version if one is available from the device supplier or ISP. If no patched firmware is available, replace the device with supported hardware. The vulnerable Remote System Log forwarding code in adv_remotelog.asp should be corrected by strictly validating and sanitizing the syslogServerAddr parameter and avoiding shell invocation with user-controlled input.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
Billion5200w-T Firmwareoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

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Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

Community discussion across Reddit, Mastodon, and other social sources.