CVE-2020-17527
high-risk
Published 2020-12-03
While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this would most likely lead to an error and the closure of the HTTP/2 connection, it is possible that information could leak between requests.
Do I need to act?
!
10.5% chance of exploitation in next 30 days
EPSS score — higher than 89% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
Affected Products (20)
References (50)
Third Party Advisory
https://security.gentoo.org/glsa/202012-23
Third Party Advisory
https://security.netapp.com/advisory/ntap-20201210-0003/
and 30 more references
63
/ 100
high-risk
Severity
26/34 · High
Exploitability
11/34 · Low
Exposure
26/34 · High