CVE-2021-40867 Race condition in n/a

High 7.8 Published Updated

An unauthenticated attacker can hijack an admin session via a race condition tied to source IP, gaining administrative access to NETGEAR smart switches.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Local or same network only
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2021-40867?

CVE-2021-40867 is a high-severity vulnerability in n/a, published on 13 Sep 2021. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

Certain NETGEAR smart switches are affected by an authentication hijacking race-condition vulnerability by an unauthenticated attacker who uses the same source IP address as an admin in the process of logging in (e.g., behind the same NAT device, or already in possession of a foothold on an admin's machine). This occurs because the multi-step HTTP authentication process is effectively tied only to the source IP address. This affects GC108P before 1.0.8.2, GC108PP before 1.0.8.2, GS108Tv3 before 7.0.7.2, GS110TPP before 7.0.7.2, GS110TPv3 before 7.0.7.2, GS110TUP before 1.0.5.3, GS308T before 1.0.3.2, GS310TP before 1.0.3.2, GS710TUP before 1.0.5.3, GS716TP before 1.0.4.2, GS716TPP before 1.0.4.2, GS724TPP before 2.0.6.3, GS724TPv2 before 2.0.6.3, GS728TPPv2 before 6.0.8.2, GS728TPv2 before 6.0.8.2, GS750E before 1.0.1.10, GS752TPP before 6.0.8.2, GS752TPv2 before 6.0.8.2, MS510TXM before 1.0.4.2, and MS510TXUP before 1.0.4.2.

Weakness: CWE-290

Which versions are affected by CVE-2021-40867?

It affects 20 products.

Products include Netgear Gc108p Firmware, Netgear Gc108pp Firmware, Netgear Gs108t Firmware, Netgear Gs110tp Firmware, Netgear Gs110tpp Firmware, Netgear Gs110tup Firmware and 14 more.

How do I fix CVE-2021-40867?

No fix has been published for CVE-2021-40867 yet. Limit exposure of the affected software until one is available.

Is CVE-2021-40867 being exploited?

There is no known exploitation of CVE-2021-40867 in the wild and no public exploit code.

Sources

Also known as GHSA-cj95-hc8g-66rx.

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