CVE-2019-15702 Denial of service in n/a

High 7.5 Published Updated

An infinite loop in the TCP option parser allows remote attackers to cause a denial of service in RIOT OS.

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-2019-15702?

CVE-2019-15702 is a high-severity denial of service vulnerability in n/a, published on 27 Aug 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In the TCP implementation (gnrc_tcp) in RIOT through 2019.07, the parser for TCP options does not terminate on all inputs, allowing a denial-of-service, because sys/net/gnrc/transport_layer/tcp/gnrc_tcp_option.c has an infinite loop for an unknown zero-length option.

Weakness: CWE-835

Which versions are affected by CVE-2019-15702?

It affects 1 product.

Products include Riot-Os Riot.

How do I fix CVE-2019-15702?

No fix has been published for CVE-2019-15702 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2019-15702 being exploited?

There is no known exploitation of CVE-2019-15702 in the wild and no public exploit code.

Sources

Also known as GHSA-85jm-9q7w-rpmg.

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