CVE-2019-10053 Integer overflow in n/a

Critical 9.8 Published Updated

An attacker can cause a denial of service in Suricata by sending a specific SSH banner that triggers an integer underflow and heap over-read.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2019-10053?

CVE-2019-10053 is a critical vulnerability in n/a, published on 13 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in Suricata 4.1.x before 4.1.4. If the input of the function SSHParseBanner is composed only of a \n character, then the program runs into a heap-based buffer over-read. This occurs because the erroneous search for \r results in an integer underflow.

Weakness: CWE-191, CWE-125

Which versions are affected by CVE-2019-10053?

It affects 1 product.

Products include Suricata-Ids Suricata.

How do I fix CVE-2019-10053?

Upgrade to a fixed version.

Is CVE-2019-10053 being exploited?

There is no known exploitation of CVE-2019-10053 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2019-10053, GHSA-38xc-j7pw-37v9, UBUNTU-CVE-2019-10053.

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