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Debian Security Advisory DSA-5522-2                   security@debian.org
https://www.debian.org/security/                          Markus Koschany
October 12, 2023                      https://www.debian.org/security/faq
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Package        : tomcat9
CVE ID         : CVE-2023-44487
Debian Bug     : 1053820

The patch to address CVE-2023-44487 (Rapid Reset Attack) was incomplete and
caused a regression when using asynchronous I/O (the default for NIO and NIO2).
DATA frames must be included when calculating the HTTP/2 overhead count to
ensure that connections are not prematurely terminated.

For the oldstable distribution (bullseye), this problem has been fixed
in version 9.0.43-2~deb11u8.

We recommend that you upgrade your tomcat9 packages.

For the detailed security status of tomcat9 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/tomcat9

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org

Debian: DSA-5522-2: tomcat9 regression update

October 12, 2023
The patch to address CVE-2023-44487 (Rapid Reset Attack) was incomplete and caused a regression when using asynchronous I/O (the default for NIO and NIO2)

Summary

The patch to address CVE-2023-44487 (Rapid Reset Attack) was incomplete and
caused a regression when using asynchronous I/O (the default for NIO and NIO2).
DATA frames must be included when calculating the HTTP/2 overhead count to
ensure that connections are not prematurely terminated.

For the oldstable distribution (bullseye), this problem has been fixed
in version 9.0.43-2~deb11u8.

We recommend that you upgrade your tomcat9 packages.

For the detailed security status of tomcat9 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/tomcat9

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org

Severity
Package : tomcat9
CVE ID : CVE-2023-44487
Debian Bug : 1053820

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