CVE-2024-20926 Deserialization in Java SE JDK and JRE
An unauthenticated attacker can exploit a scripting component flaw to gain unauthorized access to critical data in Java SE and GraalVM.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-20926?
CVE-2024-20926 is a medium-severity unsafe deserialization vulnerability in Debian Debian Linux, published on 16 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Vulnerability in the Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: Scripting). Supported versions that are affected are Oracle Java SE: 8u391, 8u391-perf, 11.0.21; Oracle GraalVM for JDK: 17.0.9; Oracle GraalVM Enterprise Edition: 20.3.12, 21.3.8 and 22.3.4. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Java SE, Oracle GraalVM for JDK, Oracle GraalVM Enterprise Edition accessible data. Note: This vulnerability can be exploited by using APIs in the specified Component, e.g., through a web service which supplies data to the APIs. This vulnerability also 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. CVSS 3.1 Base Score 5.9 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N).
Which versions are affected by CVE-2024-20926?
3 open source packages ship an affected version, including java, java-min and jre. It affects 8 products.
| Package | Affected | Fixed in |
|---|---|---|
java Bitnami | All versions | 1.8.0, 8.0.401, 11.0.22 |
java-min Bitnami | All versions | 1.8.0, 8.0.401, 11.0.22 |
jre Bitnami | All versions | 1.8.0, 8.0.401, 11.0.22 |
Products include Debian Debian Linux, Netapp Cloud Insights Acquisition Unit, Netapp Cloud Insights Storage Workload Security Agent, Netapp Oncommand Insight, Oracle Graalvm, Oracle Graalvm for Jdk and 2 more.
How do I fix CVE-2024-20926?
Upgrade java to a fixed version for your release line: 1.8.0, 8.0.401 or 11.0.22.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2024-20926 being exploited?
There is no known exploitation of CVE-2024-20926 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as BELL-CVE-2024-20926, BIT-java-2024-20926, BIT-java-min-2024-20926, BIT-jre-2024-20926, CLEANSTART-2026-GF07941, CLEANSTART-2026-SK25464 and 6 more.