CVE-2018-11765 Improper Authentication in Apache Hadoop

High 7.5 Published Updated

Attackers can access protected servlets without authentication in Apache Hadoop when Kerberos is enabled but SPNEGO is disabled.

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

What is CVE-2018-11765?

CVE-2018-11765 is a high-severity missing authorization vulnerability in Apache Hadoop, published on 30 Sep 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Apache Hadoop versions 3.0.0-alpha2 to 3.0.0, 2.9.0 to 2.9.2, 2.8.0 to 2.8.5, any users can access some servlets without authentication when Kerberos authentication is enabled and SPNEGO through HTTP is not enabled.

Weakness: CWE-287

Which versions are affected by CVE-2018-11765?

6 open source packages ship an affected version, including org.apache.hadoop:hadoop-main. It affects 1 product.

PackageAffectedFixed in
org.apache.hadoop:hadoop-main MavenFrom 2.8.02.8.6
org.apache.hadoop:hadoop-main MavenFrom 2.8.02.8.6
org.apache.hadoop:hadoop-main MavenFrom 2.9.02.9.3
org.apache.hadoop:hadoop-main MavenFrom 2.9.02.9.3
org.apache.hadoop:hadoop-main MavenFrom 3.0.0-alpha23.0.1
org.apache.hadoop:hadoop-main MavenFrom 3.0.0-alpha23.0.1

Products include Apache Hadoop.

How do I fix CVE-2018-11765?

Upgrade org.apache.hadoop:hadoop-main to a fixed version for your release line: 2.8.6, 2.9.3 or 3.0.1.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2018-11765 being exploited?

There is no known exploitation of CVE-2018-11765 in the wild and no public exploit code.

Sources

Also known as GHSA-rhh9-cm65-3w54.

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