Candidate: CVE-2020-13943
PublicDate: 2020-10-12 14:15:00 UTC
References:
 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13943
 https://github.com/apache/tomcat/commit/55911430df13f8c9998fbdee1f9716994d2db59b (9.0.38)
 https://github.com/apache/tomcat/commit/9d7def063b47407a09a2f9202beed99f4dcb292a (8.5.58)
 https://lists.apache.org/thread.html/r4a390027eb27e4550142fac6c8317cc684b157ae314d31514747f307%40%3Cannounce.tomcat.apache.org%3E
Description:
 If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7,
 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of
 concurrent streams for a connection (in violation of the HTTP/2 protocol),
 it was possible that a subsequent request made on that connection could
 contain HTTP headers - including HTTP/2 pseudo headers - from a previous
 request rather than the intended headers. This could lead to users seeing
 responses for unexpected resources.
Ubuntu-Description:
Notes:
Mitigation:
Bugs:
Priority: medium
Discovered-by:
Assigned-to:
CVSS:
 nvd: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N [4.3 MEDIUM]


Patches_tomcat9:
upstream_tomcat9: released (9.0.38-1)
precise/esm_tomcat9: DNE
trusty_tomcat9: ignored (out of standard support)
trusty/esm_tomcat9: DNE
xenial_tomcat9: DNE
bionic_tomcat9: not-affected (code not present)
focal_tomcat9: not-affected (code not present)
devel_tomcat9: not-affected (code not present)

Patches_tomcat8:
upstream_tomcat8: needs-triage
precise/esm_tomcat8: DNE
trusty_tomcat8: ignored (out of standard support)
trusty/esm_tomcat8: DNE
xenial_tomcat8: not-affected (code not present)
esm-infra/xenial_tomcat8: not-affected (code not present)
bionic_tomcat8: not-affected (code not present)
focal_tomcat8: DNE
devel_tomcat8: DNE