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Overview

org.apache.commons:commons-compress is an API for working with compression and archive formats.

Affected versions of this package are vulnerable to Infinite loop due to the improper handling of certain inputs during the parsing of dump files. An attacker can cause the application to enter an infinite loop by supplying crafted inputs.

Remediation

Upgrade org.apache.commons:commons-compress to version 1.26.0 or higher.

References

• Apache Lists
• GitHub Commit

Overview

org.apache.velocity:velocity is a None

Affected versions of this package are vulnerable to Arbitrary Code Execution. An attacker that is able to modify Velocity templates may execute arbitrary Java code or run arbitrary system commands with the same privileges as the account running the Servlet container. This applies to applications that allow untrusted users to upload/modify velocity templates running Apache Velocity Engine.

Note Users of org.apache.velocity:velocity should update to org.apache.velocity:velocity-engine-core version 2.3 to mitigate this vulnerability.

Remediation

There is no fixed version for org.apache.velocity:velocity.

References

• Apache Security Advisory

• GitHub PR

• GitHub Security Labs

Overview

org.codehaus.jackson:jackson-mapper-asl is a high-performance data binding package built on Jackson JSON processor.

Affected versions of this package are vulnerable to XML External Entity (XXE) Injection. via the DOMDeserializer.class file and its inner classes (DocumentDeserializer.class and NodeDeserializer.class) that uses the _parserFactory instance without restricting it from processing external XML entities when parsing user input.

Details

XXE Injection is a type of attack against an application that parses XML input. XML is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. By default, many XML processors allow specification of an external entity, a URI that is dereferenced and evaluated during XML processing. When an XML document is being parsed, the parser can make a request and include the content at the specified URI inside of the XML document.

Attacks can include disclosing local files, which may contain sensitive data such as passwords or private user data, using file: schemes or relative paths in the system identifier.

For example, below is a sample XML document, containing an XML element- username.

<?xml version="1.0" encoding="ISO-8859-1"?>
   <username>John</username>
</xml>

An external XML entity - xxe, is defined using a system identifier and present within a DOCTYPE header. These entities can access local or remote content. For example the below code contains an external XML entity that would fetch the content of /etc/passwd and display it to the user rendered by username.

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE foo [
   <!ENTITY xxe SYSTEM "file:///etc/passwd" >]>
   <username>&xxe;</username>
</xml>

Other XXE Injection attacks can access local resources that may not stop returning data, possibly impacting application availability and leading to Denial of Service.

Remediation

There is no fixed version for org.codehaus.jackson:jackson-mapper-asl.

For org.codehaus.jackson:jackson-all releases supporting jackson-mapper-asl. As a workaround, for 1.9.X release, the javax.xml.XMLConstants.FEATURE_SECURE_PROCESSING setting can be enabled. For 2.x releases, the "javax.xml.stream.isSupportingExternalEntities setting can be set to FALSE.

References

• CVE-2019-10172 Remediation for Jackson Databind

• RedHat Bugzilla Bug

• StackOverflow CVE-2016-3720 Remediation - jackson-all