Amazon Linux 2 Security Advisory: ALAS-2021-1593
Advisory Release Date: 2021-01-25 23:09 Pacific
Advisory Updated Date: 2021-01-26 18:44 Pacific
Severity:
Important
Issue Overview:
A flaw was found in xstream. An unsafe deserialization of user-supplied XML, in conjunction with relying on the default deny list, allows a remote attacker to perform a variety of attacks including a remote code execution of arbitrary code in the context of the JVM running the XStream application. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability. (CVE-2020-26217)
Affected Packages:
xstream
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update xstream to update your system.
New Packages:
noarch:
xstream-1.3.1-12.amzn2.noarch
xstream-javadoc-1.3.1-12.amzn2.noarch
src:
xstream-1.3.1-12.amzn2.src