Denial of Service (DoS)

Affecting openjdk-jre package, versions [1.7.0,1.7.0_281) || [1.8.0,1.8.0_271) || [11.0.0,11.0.9) || [15.0.0,15.0.1)

Report new vulnerabilities
Do your applications use this vulnerable package? Test your applications

Overview

openjdk-jre is a free and open-source implementation of the Java Platform, Standard Edition (Java SE).

Affected versions of this package are vulnerable to Denial of Service (DoS). 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.

Details

Denial of Service (DoS) describes a family of attacks, all aimed at making a system inaccessible to its intended and legitimate users.

Unlike other vulnerabilities, DoS attacks usually do not aim at breaching security. Rather, they are focused on making websites and services unavailable to genuine users resulting in downtime.

One popular Denial of Service vulnerability is DDoS (a Distributed Denial of Service), an attack that attempts to clog network pipes to the system by generating a large volume of traffic from many machines.

When it comes to open source libraries, DoS vulnerabilities allow attackers to trigger such a crash or crippling of the service by using a flaw either in the application code or from the use of open source libraries.

Two common types of DoS vulnerabilities:

  • High CPU/Memory Consumption- An attacker sending crafted requests that could cause the system to take a disproportionate amount of time to process. For example, commons-fileupload:commons-fileupload.

  • Crash - An attacker sending crafted requests that could cause the system to crash. For Example, npm ws package

Remediation

Upgrade openjdk-jre to version 7.0.281, 8.0.271, 11.0.9, 15.0.1 or higher.

References

CVSS Score

3.7
low severity
  • Attack Vector
    Network
  • Attack Complexity
    High
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    Low
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Credit
Unknown
CVE
CVE-2020-14779
CWE
CWE-770
Snyk ID
SNYK-UPSTREAM-OPENJDKJRE-1020122
Disclosed
20 Oct, 2020
Published
21 Oct, 2020