CVE-2019-17563

moderate-risk
Published 2019-12-23

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.

Do I need to act?

~
3.3% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / HIGH complexity

References (38)

Third Party Advisory https://usn.ubuntu.com/4251-1/
and 18 more references
46
/ 100
moderate-risk
Severity 22/34 · High
Exploitability 7/34 · Low
Exposure 17/34 · Moderate