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CVE-2020-13943

CVE-2020-13943

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 4.3 · Medium · EPSS 55.0% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • apache tomcat

    Versions
    • 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: Affected

    No fix published

  • tomcat9 Debian:12

    Affected ranges
    • ECOSYSTEM: < 9.0.38-1

    Update to 9.0.38-1

  • tomcat9 Debian:13

    Affected ranges
    • ECOSYSTEM: < 9.0.38-1

    Update to 9.0.38-1

  • tomcat9 Debian:14

    Affected ranges
    • ECOSYSTEM: < 9.0.38-1

    Update to 9.0.38-1

Original sources

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