CVE-2022-0711: High severity HAProxy HAProxy vulnerability

Published Feb 11, 2022
·
Updated

A flaw was found in haproxy. Anybody who can add a "set-cookie2 X=Y" header into the return path from their server/backend will kill haproxy in 2.2 (and onwards), resulting in a denial of service.

Other sources

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 Software

19 affected componentsFixes available
redhat/haproxy<0:2.0.16-3.el7
0:2.0.16-3.el7
redhat/haproxy<0:2.0.19-3.el7
0:2.0.19-3.el7
redhat/haproxy<0:2.2.13-3.el8
0:2.2.13-3.el8
redhat/haproxy<0:2.2.15-4.el8
0:2.2.15-4.el8
HAProxy HAProxy>=2.2.0<2.2.21
HAProxy HAProxy>=2.3.0<2.3.18
HAProxy HAProxy>=2.4.0<2.4.13
redhat OpenShift Container Platform=4.0
redhat Software Collections
redhat Enterprise Linux=7.0
redhat Enterprise Linux=8.0
Debian Debian Linux=11.0
redhat/haproxy<2.5.2
2.5.2
debian/haproxy<2.4.13-1
2.4.13-1
debian/haproxy<2.4.13-1
2.4.13-1
debian/haproxy<2.4.13-1
2.4.13-1
debian/haproxy
2.6.12-1+deb12u32.6.12-1+deb12u43.0.11-1+deb13u33.0.11-1+deb13u43.2.26-1
alpine/haproxy>=2.2.0<2.2.21-r0
2.2.21-r0
alpine/haproxy>=2.2.0<2.2.21-r0
2.2.21-r0

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/haproxy to a version that resolves this vulnerability.

    Fixed in 0:2.0.16-3.el7
  2. Upgrade

    Upgrade redhat/haproxy to a version that resolves this vulnerability.

    Fixed in 0:2.0.19-3.el7
  3. Upgrade

    Upgrade redhat/haproxy to a version that resolves this vulnerability.

    Fixed in 0:2.2.13-3.el8
  4. Upgrade

    Upgrade redhat/haproxy to a version that resolves this vulnerability.

    Fixed in 0:2.2.15-4.el8
  5. Upgrade

    Upgrade redhat/haproxy to a version that resolves this vulnerability.

    Fixed in 2.5.2
  6. Upgrade

    Upgrade debian/haproxy to a version that resolves this vulnerability.

    Fixed in 2.6.12-1+deb12u3Fixed in 2.6.12-1+deb12u4Fixed in 3.0.11-1+deb13u3Fixed in 3.0.11-1+deb13u4Fixed in 3.2.26-1
  7. Upgrade

    Upgrade alpine/haproxy to a version that resolves this vulnerability.

    Fixed in 2.2.21-r0
  8. Upgrade

    Upgrade debian/haproxy to a version that resolves this vulnerability.

    Fixed in 2.4.13-1

Event History

Feb 11, 2022
Data Sourced
via Red Hat·05:35 PM
DescriptionSeverityAffected Software
Feb 23, 2022
CVE Published
02:48 PM
Mar 2, 2022
CVE Published
via MITRE·09:59 PM
Data Sourced
via MITRE·09:59 PM
DescriptionWeakness
Data Sourced
via NVD·10:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Data Sourced
via OSV·10:15 PM
SeverityAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

What is the vulnerability ID of this flaw in HAProxy?

The vulnerability ID is CVE-2022-0711.

2

How does this vulnerability affect HAProxy?

This vulnerability can lead to a denial of service condition in HAProxy.

3

What is the severity of CVE-2022-0711?

The severity of CVE-2022-0711 is high with a severity value of 7.

4

What software versions of HAProxy are affected by this vulnerability?

HAProxy versions up to 2.5.1 are affected by this vulnerability.

5

How can I fix CVE-2022-0711 in HAProxy?

To fix CVE-2022-0711, update HAProxy to version 2.5.2 or later.

Company

Resources

Contact

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