Categories: Security News

All Versions of ASUS Routers Affected by Multiple Vulnerabilities that Allows to Gain Complete Router Access

Multiple critical vulnerabilities discovered in ASUS Routers that allow an attacker can able to gain complete control of the router access and this flaw existed in all the AsusWRT Routers.

There are 4 Vulnerabilities has been reported and all together will provide complete router access to attacker once router administrator login with his admin credentials then this flaw allows for retrieving the login/password using Administrator token.

According to seclists full disclosure, all the vulnerabilities are noticed to vendors and fixes has been realized.

Also Read Self-Destructive KillDisk Malware Overwrites then Deletes files and Force a Reboot

Highly Predictable Session Tokens (CVE-2017-15654)

This vulnerability allows an attacker can guess the administrator Login token in Router Which can be used to gain the admin user credentials when admin logged in the session.

stdlib rand function helps to generate a session token for an authenticated user and the Specific set of code initializes the random number generator each time a token is generated with router Login time.

Not Sufficient logged user IP validation(CVE-2017-15653)

Once attacker gain the session token using the Previous Vulnerability(CVE-2017-15653) attacker will perform the IP Verification mechanism and he will use special user-agent by sending the request.

Later Following Proof of Concept will be used for download current router configuration even if issued from a different than the logged user IP address

 curl "http://ROUTERADDRESS/s.CFG" -H "Cookie: asus_token=TOKEN" -H 'User-Agent:
asusrouter-asusrouter-asusrouter-asusrouter'

Password Stored in Plain Text (CVE-2017-15656)

Asus routers stored all the passwords in the Plaintext in NVRAM memory which allow to downloading the backup and decode the password which leads to anyone can extract and see the admin password by Executing NVRAM (Show NVRAM).

Logged-in Information disclosure

Based on the all 3 major flaw Attack finally can able to retrieve the active session and exploit the router and gain the admin level access and the possible attacker can control the complete network that connected with compromised Router.

Heap buffer overflow – ASUS Routers

Along with above vulnerability Heap buffer overflow in multiple HTTP headers allows for an unauthenticated remote code execution for the routers not upgradable from 3.0.0.4.376.

This vulnerability also have been fixed and assigned  CVE(CVE-2017-15655)

All these Vulnerabilities are notified to the specific vendor and they release a fixed version 3.0.0.4.382.18495.

But vendor REFUSED to fix the vulnerability as the routers using the vulnerable firmware are already EOL for Head Buffer Overflow.

Balaji

BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

Recent Posts

Zero-Trust Policy Bypass Enables Exploitation of Vulnerabilities and Manipulation of NHI Secrets

A new project has exposed a critical attack vector that exploits protocol vulnerabilities to disrupt…

2 days ago

Threat Actor Sells Burger King Backup System RCE Vulnerability for $4,000

A threat actor known as #LongNight has reportedly put up for sale remote code execution…

2 days ago

Chinese Nexus Hackers Exploit Ivanti Endpoint Manager Mobile Vulnerability

Ivanti disclosed two critical vulnerabilities, identified as CVE-2025-4427 and CVE-2025-4428, affecting Ivanti Endpoint Manager Mobile…

2 days ago

Hackers Target macOS Users with Fake Ledger Apps to Deploy Malware

Hackers are increasingly targeting macOS users with malicious clones of Ledger Live, the popular application…

2 days ago

EU Targets Stark Industries in Cyberattack Sanctions Crackdown

The European Union has escalated its response to Russia’s ongoing campaign of hybrid threats, announcing…

2 days ago

Venice.ai’s Unrestricted Access Sparks Concerns Over AI-Driven Cyber Threats

Venice.ai has rapidly emerged as a disruptive force in the AI landscape, positioning itself as…

2 days ago