-------------------------------------------------------------------------
Debian LTS Advisory DLA-3621-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                         Sean Whitton
October 16, 2023                              https://wiki.debian.org/LTS
-------------------------------------------------------------------------

Package        : nghttp2
Version        : 1.36.0-2+deb10u2
CVE ID         : CVE-2020-11080 CVE-2023-44487
Debian Bug     : 962145 1053769

Multiple vulnerabilities were discovered in nghttp2, an implementation
of the HTTP/2 protocol.

CVE-2020-11080

    A denial-of-service could be caused by a large HTTP/2 SETTINGS
    frame payload.

CVE-2023-44487

    A denial-of-service could be caused by resetting many HTTP/2
    streams quickly.  This has been observed in the wild since August.

For Debian 10 buster, these problems have been fixed in version
1.36.0-2+deb10u2.

We recommend that you upgrade your nghttp2 packages.

For the detailed security status of nghttp2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/nghttp2

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