CVE-2021-35561 Denial of service in Java SE JDK and JRE
An unauthenticated attacker can cause a partial denial of service in Java SE and GraalVM via network access, affecting deployments running untrusted code.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-35561?
CVE-2021-35561 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 20 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Vulnerability in the Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Utility). Supported versions that are affected are Java SE: 7u311, 8u301, 11.0.12, 17; Oracle GraalVM Enterprise Edition: 20.3.3 and 21.2.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Oracle GraalVM Enterprise Edition. Note: This vulnerability applies to Java deployments, typically in clients running sandboxed Java Web Start applications or sandboxed Java applets, that load and run untrusted code (e.g., code that comes from the internet) and rely on the Java sandbox for security. This vulnerability can also be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. CVSS 3.1 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
Which versions are affected by CVE-2021-35561?
3 open source packages ship an affected version, including java, java-min and jre. It affects 14 products.
| Package | Affected | Fixed in |
|---|---|---|
java Bitnami | All versions | 1.7.0, 1.8.0, 7.0.321, 8.0.311, 11.0.13, 17.0.1 |
java-min Bitnami | All versions | 1.7.0, 1.8.0, 7.0.321, 8.0.311, 11.0.13, 17.0.1 |
jre Bitnami | All versions | 1.7.0, 1.8.0, 7.0.321, 8.0.311, 11.0.13, 17.0.1 |
Products include Debian Debian Linux, Fedoraproject Fedora, Netapp Active Iq Unified Manager, Netapp E-Series Santricity Os Controller, Netapp E-Series Santricity Storage Manager, Netapp E-Series Santricity Web Services and 8 more.
How do I fix CVE-2021-35561?
Upgrade java to a fixed version for your release line: 1.7.0, 1.8.0, 7.0.321 or 8.0.311.
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-2021-35561 being exploited?
There is no known exploitation of CVE-2021-35561 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BIT-java-2021-35561, BIT-java-min-2021-35561, BIT-jre-2021-35561, CLEANSTART-2026-EG23386, CLEANSTART-2026-TK70148, DEBIAN-CVE-2021-35561 and 10 more.