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[email protected]CVE-2020-13943

HistoryOct 12, 2020 - 2:15 p.m.

CVE-2020-13943

2020-10-1214:15:12

[email protected]

web.nvd.nist.gov

523

cve-2020-13943

http/2

apache

tomcat

security

vulnerability

nvd

4 Medium

CVSS2

Attack Vector

NETWORK

Attack 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

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

4.7 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

42.1%

JSON

If an HTTP/2 client connecting to Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37 or 8.5.0 to 8.5.57 exceeded the agreed maximum number of concurrent streams for a connection (in violation of the HTTP/2 protocol), it was 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.

Affected configurations

Vulners

NVD

Node

apachetomcatRange10.0.0-M1–10.0.0-M7

apachetomcatRange9.0.0.M1–9.0.37

apachetomcatRange8.5.0–8.5.57

CPENameOperatorVersion
apache:tomcatapache tomcateq8.5.0
apache:tomcatapache tomcateq8.5.1
apache:tomcatapache tomcateq8.5.2
apache:tomcatapache tomcateq8.5.3
apache:tomcatapache tomcateq8.5.4
apache:tomcatapache tomcateq8.5.5
apache:tomcatapache tomcateq8.5.6
apache:tomcatapache tomcateq8.5.7
apache:tomcatapache tomcateq8.5.8
apache:tomcatapache tomcateq8.5.9

CPE	Name	Operator	Version
apache:tomcat	apache tomcat	eq	8.5.0
apache:tomcat	apache tomcat	eq	8.5.1
apache:tomcat	apache tomcat	eq	8.5.2
apache:tomcat	apache tomcat	eq	8.5.3
apache:tomcat	apache tomcat	eq	8.5.4
apache:tomcat	apache tomcat	eq	8.5.5
apache:tomcat	apache tomcat	eq	8.5.6
apache:tomcat	apache tomcat	eq	8.5.7
apache:tomcat	apache tomcat	eq	8.5.8
apache:tomcat	apache tomcat	eq	8.5.9

Rows per page:

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CNA Affected

[
  {
    "product": "Apache Tomcat",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Apache Tomcat 10.0.0-M1 to 10.0.0-M7, 9.0.0.M1 to 9.0.37, 8.5.0 to 8.5.57"
      }
    ]
  }
]