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InHand Networks IR615 Router (Update A)

Act Now9.8ICS-CERT ICSA-21-280-05Oct 7, 2021
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

InHand Networks IR615 Router firmware version 2.3.0.r5417 and earlier contains multiple vulnerabilities including authorization bypass (CWE-285, CWE-352), weak cryptography (CWE-326, CWE-307, CWE-521), insecure file upload (CWE-434), command injection (CWE-78), and other flaws. These allow unauthenticated remote attackers to execute arbitrary code, steal credentials and session data, upload malicious files, delete system files, brute-force user accounts, and gain full control of the device. The vulnerabilities can be exploited with low complexity from the network without any user credentials or interaction.

What this means
What could happen
An attacker with network access to the IR615 router can gain full administrative control, execute arbitrary code, steal credentials and communications, or cause operational disruption by uploading malicious files or deleting system files.
Who's at risk
Water authorities, electric utilities, and other critical infrastructure organizations using InHand IR615 routers for SCADA/remote access to PLC, RTU, or field equipment should prioritize this issue. The router is commonly deployed as a remote site gateway and a compromise could expose the entire site network.
How it could be exploited
An attacker on the network can send a specially crafted request to the IR615 to exploit one of the authorization, input validation, or weak cryptography flaws. This allows bypass of login controls and execution of arbitrary commands on the router, which could redirect traffic, intercept sensitive data, or disrupt connectivity to remote sites and control systems.
Prerequisites
  • Network access to the IR615 (direct LAN or routed IP connectivity)
  • Device running firmware version 2.3.0.r5417 or earlier
Remotely exploitableNo authentication requiredLow complexityHigh CVSS (9.8)No patch availableMultiple weaknesses (authorization bypass, weak cryptography, file upload, code execution)
Exploitability
Low exploit probability (EPSS 0.7%)
Affected products (1)
ProductAffected VersionsFix Status
IR615 Router:≤ 2.3.0.r54172.3.0.r5484 or later
Remediation & Mitigation
0/4
Do now
0/3
HARDENINGIsolate the IR615 behind a firewall; restrict inbound network access to only necessary management and site-to-site VPN ports from trusted administrative IP ranges
HARDENINGRestrict direct Internet access to the IR615; use a management network or out-of-band access method (console, serial) for firmware updates and administration
WORKAROUNDMonitor the router for unauthorized login attempts and unusual command execution; enable logging if available and review logs regularly
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXUpgrade IR615 firmware to version 2.3.0.r5484 or later
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InHand Networks IR615 Router (Update A) | CVSS 9.8 - OTPulse