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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Test your applicationsUpgrade RHEL:8
pki-deps:10.6/pki-servlet-4.0-api
to version 1:9.0.30-1.module+el8.3.0+6730+8f9c6254 or higher.
This issue was patched in RHSA-2020:4847
.
Note: Versions mentioned in the description apply only to the upstream pki-deps:10.6/pki-servlet-4.0-api
package and not the pki-deps:10.6/pki-servlet-4.0-api
package as distributed by RHEL
.
See How to fix?
for RHEL:8
relevant fixed versions and status.
In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.