CVE-2023-21930: High severity Oracle GraalVM vulnerability
It was discovered that the TLS implementation in the JSSE component of OpenJDK did not correctly handle half-duplex connections during TLS handshake. A remote attacker attacker could use this flaw to affect confidentiality or integrity of a TLS connection.
Other sources
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 TLS to compromise Oracle Java SE, Oracle GraalVM Enterprise Edition. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Java SE, Oracle GraalVM Enterprise Edition accessible data as well as unauthorized access to critical data or complete access to all Oracle Java SE, Oracle GraalVM Enterprise Edition accessible data. 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 7.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N).
Affected Software
Remediation
Patch Available
Event History
Frequently Asked Questions
What is CVE-2023-21930?
CVE-2023-21930 is an unspecified vulnerability in Oracle Java SE Oracle GraalVM Enterprise Edition related to the JSSE component.
Which versions of Oracle Java SE and Oracle GraalVM Enterprise Edition are affected by CVE-2023-21930?
The affected versions of Oracle Java SE are 8u361, 8u361-perf, 11.0.18, 17.0.6, and 20. The affected versions of Oracle GraalVM Enterprise Edition are 20.3.9, 21.3.5, and 22.3.1.
How difficult is it to exploit CVE-2023-21930?
CVE-2023-21930 is categorized as difficult to exploit.
What is the severity of CVE-2023-21930?
CVE-2023-21930 has a severity keyword of 'high' and a severity value of 7.
Where can I find more information about CVE-2023-21930?
You can find more information about CVE-2023-21930 at the following references: [IBM X-Force Exchange](https://exchange.xforce.ibmcloud.com/vulnerabilities/253115), [IBM Support Page](https://www.ibm.com/support/pages/node/7029765), [GitHub Commit](https://github.com/openjdk/jdk8u/commit/301c9adce1711d9eb3f663bef07bbb045b907332)