Vulnerability Details CVE-2021-39242
An issue was discovered in HAProxy 2.2 before 2.2.16, 2.3 before 2.3.13, and 2.4 before 2.4.3. It can lead to a situation with an attacker-controlled HTTP Host header, because a mismatch between Host and authority is mishandled.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 62.9%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=b5d2b9e154d78e4075db163826c5e0f6d31b2ab1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ALECUZDIMT5FYGP6V6PVSI4BKVZTZWN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RPNY4WZIQUAUOCLIMUPC37AQWNXTWIQM/
- https://www.debian.org/security/2021/dsa-4960
- https://www.mail-archive.com/haproxy%40formilux.org/msg41041.html
- https://git.haproxy.org/?p=haproxy.git%3Ba=commit%3Bh=b5d2b9e154d78e4075db163826c5e0f6d31b2ab1
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ALECUZDIMT5FYGP6V6PVSI4BKVZTZWN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RPNY4WZIQUAUOCLIMUPC37AQWNXTWIQM/
- https://www.debian.org/security/2021/dsa-4960
- https://www.mail-archive.com/haproxy%40formilux.org/msg41041.html
Products affected by CVE-2021-39242
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cpe:2.3:a:haproxy:haproxy:2.2.0
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cpe:2.3:a:haproxy:haproxy:2.2.1
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cpe:2.3:a:haproxy:haproxy:2.2.10
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cpe:2.3:a:haproxy:haproxy:2.2.11
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cpe:2.3:a:haproxy:haproxy:2.2.12
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cpe:2.3:a:haproxy:haproxy:2.2.13
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cpe:2.3:a:haproxy:haproxy:2.2.14
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cpe:2.3:a:haproxy:haproxy:2.2.15
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cpe:2.3:a:haproxy:haproxy:2.2.2
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cpe:2.3:a:haproxy:haproxy:2.2.3
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cpe:2.3:a:haproxy:haproxy:2.2.4
-
cpe:2.3:a:haproxy:haproxy:2.2.5
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cpe:2.3:a:haproxy:haproxy:2.2.6
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cpe:2.3:a:haproxy:haproxy:2.2.7
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cpe:2.3:a:haproxy:haproxy:2.2.8
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cpe:2.3:a:haproxy:haproxy:2.2.9
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cpe:2.3:a:haproxy:haproxy:2.3.0
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cpe:2.3:a:haproxy:haproxy:2.3.1
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cpe:2.3:a:haproxy:haproxy:2.3.10
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cpe:2.3:a:haproxy:haproxy:2.3.11
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cpe:2.3:a:haproxy:haproxy:2.3.12
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cpe:2.3:a:haproxy:haproxy:2.3.2
-
cpe:2.3:a:haproxy:haproxy:2.3.3
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cpe:2.3:a:haproxy:haproxy:2.3.4
-
cpe:2.3:a:haproxy:haproxy:2.3.5
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cpe:2.3:a:haproxy:haproxy:2.3.6
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cpe:2.3:a:haproxy:haproxy:2.3.7
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cpe:2.3:a:haproxy:haproxy:2.3.8
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cpe:2.3:a:haproxy:haproxy:2.3.9
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cpe:2.3:a:haproxy:haproxy:2.4.0
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cpe:2.3:a:haproxy:haproxy:2.4.1
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cpe:2.3:a:haproxy:haproxy:2.4.2
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cpe:2.3:o:debian:debian_linux:11.0
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cpe:2.3:o:fedoraproject:fedora:33
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cpe:2.3:o:fedoraproject:fedora:34