Debian LTS: DLA-3034-1: haproxy security update
Summary
Nathan Davison discovered that HAProxy, a load balancing reverse proxy, did not
correctly reject requests or responses featuring a transfer-encoding header
missing the "chunked" value which could facilitate a HTTP request smuggling
attack. Furthermore several flaws were discovered in DNS related functions that
may trigger infinite recursion leading to a denial of service or to information
leakage due to a out-of-bounds read.
For Debian 9 stretch, these problems have been fixed in version
1.7.5-2+deb9u1.
We recommend that you upgrade your haproxy packages.
For the detailed security status of haproxy please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/haproxy
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