Debian Security Advisory
DSA-4968-1 haproxy -- security update
- Date Reported:
- 07 Sep 2021
- Affected Packages:
- Security database references:
- In Mitre's CVE dictionary: CVE-2021-40346.
- More information:
Ori Hollander reported that missing header name length checks in the htx_add_header() and htx_add_trailer() functions in HAProxy, a fast and reliable load balancing reverse proxy, could result in request smuggling attacks or response splitting attacks.
Additionally this update addresses #993303 introduced in DSA 4960-1 causing HAProxy to fail serving URLs with HTTP/2 containing '//'.
For the stable distribution (bullseye), this problem has been fixed in version 2.2.9-2+deb11u2.
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