CVE-2020-24355 Privilege escalation in n/a

Critical 9.8 Published Updated

Attackers can escalate privileges by manipulating JSON fields during account creation on Zyxel VMG5313-B30B routers.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2020-24355?

CVE-2020-24355 is a critical vulnerability in n/a, published on 2 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Zyxel VMG5313-B30B router on firmware 5.13(ABCJ.6)b3_1127, and possibly older versions of firmware are affected by insecure permissions which allows regular and other users to create new users with elevated privileges. This is done by changing "FirstIndex" field in JSON that is POST-ed during account creation. Similar may also be possible with account deletion.

Weakness: CWE-732

Which versions are affected by CVE-2020-24355?

It affects 1 product.

Products include Zyxel Vmg5313-B30b Firmware.

How do I fix CVE-2020-24355?

No fix has been published for CVE-2020-24355 yet. Limit exposure of the affected software until one is available.

Is CVE-2020-24355 being exploited?

There is no known exploitation of CVE-2020-24355 in the wild and no public exploit code.

Sources

Also known as GHSA-2f6p-fvp2-42p6.

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