CVE-2019-17563

unknown
Published 2019-12-26 ยท Modified 2026-02-04
CVSS v3
โ€”
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
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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
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

suse SUSE Affected 1 release
VersionStatusFixed in
โ€” Affected โ€”
debian Debian Fixed 5 releases
VersionStatusFixed in
trixie Fixed 9.0.31-1
sid Fixed 9.0.31-1
forky Fixed 9.0.31-1
bullseye Fixed 9.0.31-1
bookworm Fixed 9.0.31-1

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

Community-verified mitigations for this CVE will appear above when contributors publish them.

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