CVE-2022-0711
published 2022-03-02CVE-2022-0711: A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP…
PriorityP349high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
16.56%
96.6th percentile
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop, eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.
Affected
14 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | haproxy | < haproxy 2.4.13-1 (bookworm) | haproxy 2.4.13-1 (bookworm) |
| haproxy | haproxy | — | — |
| haproxy | haproxy | >= 0 < 2.2.9-2+deb11u3 | 2.2.9-2+deb11u3 |
| haproxy | haproxy | >= 0 < 2.4.13-1 | 2.4.13-1 |
| haproxy | haproxy | >= 0 < 2.4.13-1 | 2.4.13-1 |
| haproxy | haproxy | >= 0 < 2.4.13-1 | 2.4.13-1 |
| haproxy | haproxy | >= 2.2.0 < 2.2.21 | 2.2.21 |
| haproxy | haproxy | >= 2.3.0 < 2.3.18 | 2.3.18 |
| haproxy | haproxy | >= 2.4.0 < 2.4.13 | 2.4.13 |
| msrc | cbl2_haproxy_2.4.13-1_on_cbl_mariner_2.0 | — | — |
| redhat | enterprise_linux | — | — |
| redhat | enterprise_linux | — | — |
| redhat | openshift_container_platform | — | — |
Detection & IOCsextracted from sources · hover to see the quote
- →Trigger condition: HAProxy enters an infinite loop when processing HTTP responses containing the 'Set-Cookie2' header — monitor for HAProxy process CPU spikes or unresponsiveness correlated with backend responses carrying this header. ↗
- →Vulnerability is only present in HAProxy versions 1.9 and later (Native HTTP Representation / HTX support required); versions shipped with RHEL 6/7/8 and Red Hat Software Collections are NOT affected — scope detection to HTX-enabled deployments. ↗
- →Detection focus: inspect HTTP response traffic flowing through HAProxy for the presence of the 'Set-Cookie2' header, which is the crafted packet vector for this DoS. ↗
- ·Only HAProxy deployments using the Native HTTP Representation (HTX), introduced in version 1.9, are vulnerable. Older versions without HTX support are not affected. ↗
- ·The attack vector is a crafted HTTP *response* packet (from a backend server), not a client request — detection/filtering should be applied on backend-to-HAProxy traffic, not just client-to-HAProxy. ↗
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
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GHSA
GHSA-x4fc-x944-v9p7: A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header
ghsa_unreviewed·2022-03-03
CVE-2022-0711 [HIGH] CWE-835 GHSA-x4fc-x944-v9p7: A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop, eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.
OSV
CVE-2022-0711: A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header
osv·2022-03-02·CVSS 7.5
CVE-2022-0711 [HIGH] CVE-2022-0711: A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop, eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.
Microsoft
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop
vendor_msrc·2022-03-08·CVSS 7.5
CVE-2022-0711 [HIGH] CWE-835 A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in Octobe
Ubuntu
HAProxy vulnerability
vendor_ubuntu·2022-03-03
CVE-2022-0711 HAProxy vulnerability
Title: HAProxy vulnerability
Summary: HAProxy could be made to stop responding if it received specially crafted
network traffic.
It was discovered that HAProxy incorrectly handled certain headers. A
remote attacker could possibly use this issue to cause HAProxy to stop
responding, resulting in a denial of service.
Instructions: In general, a standard system update will make all the necessary changes.
Red Hat
haproxy: Denial of service via set-cookie2 header
vendor_redhat·2022-02-23·CVSS 7.5
CVE-2022-0711 [HIGH] CWE-835 haproxy: Denial of service via set-cookie2 header
haproxy: Denial of service via set-cookie2 header
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop, eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop, eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.
Statement: This issue was introduced in HAProxy 1.9 with the Native HTTP Representation (HTX). Red Hat Enterprise
Debian
CVE-2022-0711: haproxy - A flaw was found in the way HAProxy processed HTTP responses containing the "Set...
vendor_debian·2022·CVSS 7.5
CVE-2022-0711 [HIGH] CVE-2022-0711: haproxy - A flaw was found in the way HAProxy processed HTTP responses containing the "Set...
A flaw was found in the way HAProxy processed HTTP responses containing the "Set-Cookie2" header. This flaw could allow an attacker to send crafted HTTP response packets which lead to an infinite loop, eventually resulting in a denial of service condition. The highest threat from this vulnerability is availability.
Scope: local
bookworm: resolved (fixed in 2.4.13-1)
bullseye: resolved (fixed in 2.2.9-2+deb11u3)
forky: resolved (fixed in 2.4.13-1)
sid: resolved (fixed in 2.4.13-1)
trixie: resolved (fixed in 2.4.13-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://access.redhat.com/security/cve/cve-2022-0711https://github.com/haproxy/haproxy/commit/bfb15ab34ead85f64cd6da0e9fb418c9cd14cee8https://www.debian.org/security/2022/dsa-5102https://www.mail-archive.com/haproxy%40formilux.org/msg41833.htmlhttps://access.redhat.com/security/cve/cve-2022-0711https://github.com/haproxy/haproxy/commit/bfb15ab34ead85f64cd6da0e9fb418c9cd14cee8https://www.debian.org/security/2022/dsa-5102https://www.mail-archive.com/haproxy%40formilux.org/msg41833.html
2022-03-02
Published