CVE-2020-2778: Medium severity Oracle JDK vulnerability
A flaw was found in the TLS implementation in the JSSE component of OpenJDK. Setting algorithm constraints on SSLParameters using the setAlgorithmConstraints() method could override the systems security policy defined using the jdk.tls.disabledAlgorithms security property and lead to the use of weak algorithms that were intended to be disabled.
Other sources
Vulnerability in the Java SE product of Oracle Java SE (component: JSSE). Supported versions that are affected are Java SE: 11.0.6 and 14. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTPS to compromise Java SE. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Java SE accessible data. Note: Applies to client and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service. CVSS 3.0 Base Score 3.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).
Affected Software
Event History
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
What is the severity of CVE-2020-2778?
CVE-2020-2778 is rated as a medium severity vulnerability.
How do I fix CVE-2020-2778?
To fix CVE-2020-2778, upgrade to the patched versions of OpenJDK as specified in the remedy section.
What versions are affected by CVE-2020-2778?
CVE-2020-2778 affects multiple versions of OpenJDK, particularly those prior to the patched releases mentioned in the remediation.
Is CVE-2020-2778 a remote code execution vulnerability?
No, CVE-2020-2778 is primarily a vulnerability related to TLS implementation that could lead to weaker security settings.
What can happen if CVE-2020-2778 is exploited?
Exploitation of CVE-2020-2778 can result in the use of weaker SSL/TLS algorithms than specified by the system security policy.