CVE-2020-2654 Denial of service in Java

What is CVE-2020-2654?

CVE-2020-2654 is a low-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 15 Jan 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Vulnerability in the Java SE product of Oracle Java SE (component: Libraries). Supported versions that are affected are Java SE: 7u241, 8u231, 11.0.5 and 13.0.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.0 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).

Which versions are affected by CVE-2020-2654?

3 open source packages ship an affected version, including java, java-min and jre. It affects 23 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Mcafee Epolicy Orchestrator, Netapp Active Iq Unified Manager, Netapp E-Series Performance Analyzer, Netapp E-Series Santricity Management Plug-Ins and 17 more.

How do I fix CVE-2020-2654?

Upgrade java to a fixed version for your release line: 1.7.0, 1.8.0, 7.0.251 or 8.0.241.

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-2020-2654 being exploited?

There is no known exploitation of CVE-2020-2654 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BIT-java-2020-2654, BIT-java-min-2020-2654, BIT-jre-2020-2654, CLEANSTART-2026-RB34373, CLEANSTART-2026-WX84482, DEBIAN-CVE-2020-2654 and 7 more.