SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2019-10072

The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 .

HIGH 7.5EPSS 73.0%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 73.0%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.

Description

The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

CVSS 3.0
7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
72.99% probability · 99th percentile
CISA KEV
Not listed
Weakness
CWE-667
Affected
apache/tomcat
Source
security@apache.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.