Certain NETGEAR devices are affected by authentication bypass.

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

• netgear d6100 firmwarebefore 1.0.0.55
• netgear d7000 firmwarebefore 1.0.1.50
• netgear d7800 firmwarebefore 1.0.1.24
• netgear jnr1010 firmwarebefore 1.1.0.40
• netgear jwnr2010 firmwarebefore 1.1.0.40
• netgear r6100 firmwarebefore 1.0.1.12
• netgear r6220 firmwarebefore 1.1.0.50
• netgear r7500 firmwarebefore 1.0.0.108
• netgear r7500 firmwarebefore 1.0.3.10
• netgear wndr4300 firmwarebefore 1.0.2.88
• netgear wndr4300 firmwarebefore 1.0.0.48
• netgear wndr4500 firmwarebefore 1.0.0.48
• netgear wnr1000 firmwarebefore 1.1.0.40
• netgear wnr2000 firmwarebefore 1.0.0.42
• netgear wnr2020 firmwarebefore 1.1.0.40
• netgear wnr2050 firmwarebefore 1.1.0.40

Other highest-scoring records for the same primary product.

• CVE-2016-10174The NETGEAR WNR2000v5 router contains a buffer overflow in the hidden_lang_avi parameter when invoking the URL /apply.cgi?/lang_check.html.KEV
  94Now
• CVE-2017-18764Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
  36Monitor
• CVE-2018-21208Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
  35Monitor
• CVE-2018-21113Certain NETGEAR devices are affected by command injection by an unauthenticated attacker.
  35Monitor
• CVE-2017-18792NETGEAR D6100 devices before 1.0.0.50_0.0.50 are affected by command injection.
  33Monitor
• CVE-2018-21177Certain NETGEAR devices are affected by a stack-based buffer overflow by an authenticated user.
  28Monitor

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Root cause

Authentication is added route by route instead of being enforced in one place. When a route added later bypasses the shared middleware, the session check never runs for it.

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

1app.use("/admin", requireSession, adminRouter);2
3// Route added later skips the middleware4app.post("/admin-api/config", updateConfig);

1const admin = express.Router();2admin.use(requireSession, requireRole("admin"));3
4admin.post("/config", updateConfig);5app.use("/admin", admin);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.