------------------------------------------------------------------------- Debian LTS Advisory DLA-3208-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Markus Koschany November 27, 2022 https://wiki.debian.org/LTS ------------------------------------------------------------------------- Package : varnish Version : 6.1.1-1+deb10u4 CVE ID : CVE-2020-11653 CVE-2022-45060 Debian Bug : 956307 1023751 Martin van Kervel Smedshammer discovered a request forgery attack can be performed on Varnish Cache servers that have the HTTP/2 protocol turned on. An attacker may introduce characters through the HTTP/2 pseudo-headers that are invalid in the context of an HTTP/1 request line, causing the Varnish server to produce invalid HTTP/1 requests to the backend. This may in turn be used to successfully exploit vulnerabilities in a server behind the Varnish server. For Debian 10 buster, these problems have been fixed in version 6.1.1-1+deb10u4. We recommend that you upgrade your varnish packages. For the detailed security status of varnish please refer to its security tracker page at: https://security-tracker.debian.org/tracker/varnish 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
Attachment:
signature.asc
Description: This is a digitally signed message part