APM 10.7 - vulnerabilities: xstream 1.4.18 and Apache Tomcat 8.5.73
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APM 10.7 - vulnerabilities: xstream 1.4.18 and Apache Tomcat 8.5.73


Article ID: 234848


Updated On:


CA Application Performance Management (APM / Wily / Introscope)


Below vulnerabilities have been reported by Blackduck 


XStream is an open source java library to serialize objects to XML and back again. Versions prior to 1.4.19 may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. XStream 1.4.19 monitors and accumulates the time it takes to add elements to collections and throws an exception if a set threshold is exceeded. Users are advised to upgrade as soon as possible. Users unable to upgrade may set the NO_REFERENCE mode to prevent recursion. See GHSA-rmr5-cpv2-vgjf for further details on a workaround if an upgrade is not possible.

Short Term Upgrade Recommendation



The fix for bug CVE-2020-9484 introduced a time of check, time of use vulnerability into Apache Tomcat 10.1.0-M1 to 10.1.0-M8, 10.0.0-M5 to 10.0.14, 9.0.35 to 9.0.56 and 8.5.55 to 8.5.73 that allowed a local attacker to perform actions with the privileges of the user that the Tomcat process is using. This issue is only exploitable when Tomcat is configured to persist sessions using the FileStore.

Short Term Upgrade Recommendation



Introscope APM 10.7.0


To fix in APM 10.8

Additional Information