CVE-2023-21967: Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affec...

Description

Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u361, 8u361-perf, 11.0.18, 17.0.6, 20; Oracle GraalVM Enterprise Edition: 20.3.9, 21.3.5 and 22.3.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle 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 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

Metrics

CVSS 3.1

5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

1.52%

71.4th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions	Update
Oracle	Graalvm	20.3.9	—
Oracle	Graalvm	21.3.5	—
Oracle	Graalvm	22.3.1	—
Oracle	Jdk	1.8.0	Update361
Oracle	Jdk	11.0.18	—
Oracle	Jdk	17.0.6	—
Oracle	Jdk	20	—
Oracle	Jre	1.8.0	Update361
Oracle	Jre	11.0.18	—
Oracle	Jre	17.0.6	—
Oracle	Jre	20	—
Netapp	7-Mode Transition Tool	All versions	—
Netapp	Brocade San Navigator	All versions	—
Netapp	Cloud Insights Acquisition Unit	All versions	—
Netapp	Cloud Insights Storage Workload Security Agent	All versions	—
Netapp	Oncommand Insight	All versions	—
Debian	Debian Linux	10.0	—
Debian	Debian Linux	11.0	—
Debian	Debian Linux	12.0	—
Oracle	Openjdk	< 8	—
Oracle	Openjdk	>= 11, <= 11.0.18	—
Oracle	Openjdk	>= 17, <= 17.0.6	—
Oracle	Openjdk	8	—
Oracle	Openjdk	20	—

References

https://lists.debian.org/debian-lts-announce/2023/09/msg00018.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20230427-0008/Third Party Advisory
https://security.netapp.com/advisory/ntap-20240621-0006/
https://www.couchbase.com/alerts/Third Party Advisory
https://www.debian.org/security/2023/dsa-5430Third Party Advisory
https://www.debian.org/security/2023/dsa-5478Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2023.htmlVendor Advisory
https://lists.debian.org/debian-lts-announce/2023/09/msg00018.htmlMailing List, Third Party Advisory
https://security.netapp.com/advisory/ntap-20230427-0008/Third Party Advisory
https://security.netapp.com/advisory/ntap-20240621-0006/
https://www.couchbase.com/alerts/Third Party Advisory
https://www.debian.org/security/2023/dsa-5430Third Party Advisory
https://www.debian.org/security/2023/dsa-5478Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2023.htmlVendor Advisory

Timeline

Published: Apr 18, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-21967?

Vulnerability in the Oracle Java SE, Oracle GraalVM Enterprise Edition product of Oracle Java SE (component: JSSE). Supported versions that are affected are Oracle Java SE: 8u361, 8u361-perf, 11.0.18, 17.0.6, 20; Oracle GraalVM Enterprise Edition: 20.3.9, 21.3.5 and 22.3.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle 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 5.9 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H).

How severe is CVE-2023-21967?

CVE-2023-21967 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.52% probability of exploitation in the next 30 days.

How do I fix CVE-2023-21967?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.