CVE-2019-17563

unknown
Published 2019-12-26 · Modified 2026-02-04
CVSS v3
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v2
VIR risk

Description

When using FORM authentication with Apache Tomcat 9.0.0.M1 to 9.0.29, 8.5.0 to 8.5.49 and 7.0.0 to 7.0.98 there was a narrow window where an attacker could perform a session fixation attack. The window was considered too narrow for an exploit to be practical but, erring on the side of caution, this issue has been treated as a security vulnerability.

Predictions

Exploit likelihood
30%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2019-17563

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2019-17563.html

OS impact

OSVersionStatusFixed in
suse slesaffected
debian debianbookwormfixed9.0.31-1
debian debianbullseyefixed9.0.31-1
debian debianforkyfixed9.0.31-1
debian debiansidfixed9.0.31-1
debian debiantrixiefixed9.0.31-1

Package impact

EcosystemPackageVulnerableFixed
java Mavenorg.apache.tomcat.embed:tomcat-embed-core<7.0.997.0.99
java Mavenorg.apache.tomcat.embed:tomcat-embed-core>=8.0.0,<8.5.508.5.50
java Mavenorg.apache.tomcat.embed:tomcat-embed-core>=9.0.0,<9.0.309.0.30

References

Verify integrity in audit chain (admin only). AS-IS.