4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
0.001 Low
EPSS
Percentile
41.2%
A flaw was found in Apache Tomcat. If an HTTP/2 client exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it is possible that a subsequent request made on that connection could contain HTTP headers - including HTTP/2 pseudo headers - from a previous request rather than the intended headers. This could lead to users seeing responses for unexpected resources. The highest threat from this vulnerability is to data confidentiality.
mail-archives.apache.org/mod_mbox/tomcat-announce/202010.mbox/%3C2b767c6e-dcb9-5816-bd69-a3bc0771fef3%40apache.org%3E
tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.0.0-M8
tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.58
tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.38
bugzilla.redhat.com/show_bug.cgi?id=1887648
nvd.nist.gov/vuln/detail/CVE-2020-13943
www.cve.org/CVERecord?id=CVE-2020-13943
4.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
4 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:N/A:N
0.001 Low
EPSS
Percentile
41.2%