CVE-2020-14779: Low severity IBM Cloud Pak for Automation vulnerability
An unspecified vulnerability in Java SE related to the Serialization component could allow an unauthenticated attacker to cause a denial of service resulting in a low availability impact using unknown attack vectors.
Other sources
It was discovered that the implementation of the Proxy class in the Serialization component of OpenJDK could trigger an out-of-memory condition when deserializing Proxy class objects with many interfaces. A specially-crafted input could cause a Java application to use an excessive amount of memory when deserialized.
The patch for this issue adds a new system property jdk.serialProxyInterfaceLimit that can be used to reduce the limit for Proxy interfaces from the default of 65535 and hence better protect against excessive memory usage.
— Red Hat
Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Serialization). Supported versions that are affected are Java SE: 7u271, 8u261, 11.0.8 and 15; Java SE Embedded: 8u261. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded. 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 3.1 Base Score 3.7 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L).
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 1.8.0-openjdk-1:1.8.0.272.b10-0.el6_10 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 11-openjdk-1:11.0.9.11-0.el7_9 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 1.8.0-openjdk-1:1.8.0.272.b10-1.el7_9 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 1.8.0-ibm-1:1.8.0.6.20-1jpp.1.el7 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 1.7.1-ibm-1:1.7.1.4.75-1jpp.1.el7 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 11-openjdk-1:11.0.9.11-0.el8_2 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 1.8.0-openjdk-1:1.8.0.272.b10-1.el8_2 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 1.8.0-ibm-1:1.8.0.6.20-1.el8_3 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 11-openjdk-1:11.0.9.11-0.el8_0 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 1.8.0-openjdk-1:1.8.0.272.b10-0.el8_0 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 11-openjdk-1:11.0.9.11-0.el8_1 - Upgrade
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redhat/javato a version that resolves this vulnerability.Fixed in 1.8.0-openjdk-1:1.8.0.272.b10-0.el8_1 - Upgrade
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debian/openjdk-11to a version that resolves this vulnerability.Fixed in 11.0.16+8-1~deb10u1Fixed in 11.0.20+8-1~deb10u1Fixed in 11.0.20+8-1~deb11u1Fixed in 11.0.21+9-1 - Upgrade
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debian/openjdk-8to a version that resolves this vulnerability.Fixed in 8u382-ga-2 - Upgrade
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Java SEto a version that resolves this vulnerability.Fixed in 7u271 - Upgrade
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Java SEto a version that resolves this vulnerability.Fixed in 8u261 - Upgrade
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Java SEto a version that resolves this vulnerability.Fixed in 11.0.8 - Upgrade
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Java SEto a version that resolves this vulnerability.Fixed in 15 - Upgrade
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Java SE Embeddedto a version that resolves this vulnerability.Fixed in 8u261 - Configuration
Apply the patch’s new system property jdk.serialProxyInterfaceLimit to reduce the Proxy interface limit from the default of 65535, limiting the impact of out-of-memory conditions during deserialization of Proxy objects with many interfaces.
OpenJDK Serialization (Proxy class) jdk.serialProxyInterfaceLimit = (set to a lower value than default 65535)
Event History
Parent advisories
This vulnerability appears in the following advisories.
Frequently Asked Questions
What is the severity of CVE-2020-14779?
The severity of CVE-2020-14779 is low with a severity value of 3.7.
What is the affected software for CVE-2020-14779?
The affected software for CVE-2020-14779 is Java SE and Java SE Embedded.
How can an attacker exploit CVE-2020-14779?
CVE-2020-14779 is a difficult to exploit vulnerability that allows an unauthenticated attacker with network access.
How do I fix CVE-2020-14779?
To fix CVE-2020-14779, update to the recommended versions of Java SE: 7u271, 8u261, 11.0.8, or 15.
Where can I find more information about CVE-2020-14779?
You can find more information about CVE-2020-14779 on the Oracle website: [link1], [link2], [link3].