CVE-2018-12418 Junrar vulnerable to Infinite Loop

Medium 5.5 Published 14 Jun 2018 Updated 17 Sep 2024

An attacker can cause a denial of service via an infinite loop in the Junrar library when processing corrupt RAR files.

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: Available

What is CVE-2018-12418?

CVE-2018-12418 is a medium-severity denial of service vulnerability in n/a, published on 14 Jun 2018. 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

Archive.java in Junrar before 1.0.1, as used in Apache Tika and other products, is affected by a denial of service vulnerability due to an infinite loop when handling corrupt RAR files.

Weakness: CWE-835

Which versions are affected by CVE-2018-12418?

2 open source packages ship an affected version, including com.github.junrar:junrar. It affects 1 product.

Package	Affected	Fixed in
`com.github.junrar:junrar` Maven	All versions	`1.0.1`
`com.github.junrar:junrar` Maven	All versions	`1.0.1`

Products include Junrar Project Junrar.

How do I fix CVE-2018-12418?

Upgrade com.github.junrar:junrar to 1.0.1 or later.

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-2018-12418 being exploited?

There is no known exploitation of CVE-2018-12418 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as ECHO-dcdc-4fd6-a372, GHSA-5xqr-grq4-qwgx.