How does CVE-2023-25950 affect HAProxy?

CVE-2023-25950 allows a remote attacker to alter a legitimate user's request, potentially obtaining sensitive information or causing a denial-of-service (DoS) condition.

What is the severity of CVE-2023-25950?

The severity of CVE-2023-25950 is high with a CVSS score of 7.3.

Which versions of HAProxy are affected by CVE-2023-25950?

HAProxy versions 2.7.0 and 2.6.1 to 2.6.7 are affected by CVE-2023-25950.

How can I mitigate the vulnerability CVE-2023-25950?

To mitigate the vulnerability, it is recommended to update to a version of HAProxy that includes the fix provided by the vendor.

Vulnerability/
CVE-2023-25950

high

7.3

CWE

444

11/4/2023

11/2/2025

CVE-2023-25950

Q: What is CVE-2023-25950?

CVE-2023-25950 is a HTTP request/response smuggling vulnerability in HAProxy versions 2.7.0 and 2.6.1 to 2.6.7.

First published: Tue Apr 11 2023(Updated: )

HTTP request/response smuggling vulnerability in HAProxy version 2.7.0, and 2.6.1 to 2.6.7 allows a remote attacker to alter a legitimate user's request. As a result, the attacker may obtain sensitive information or cause a denial-of-service (DoS) condition.

Credit: vultures@jpcert.or.jp

Affected Software	Affected Version	How to fix
Aprox Aproxengine	>=2.6.1<=2.6.7
Aprox Aproxengine	=2.7.0
HAProxy	>=2.6.1<=2.6.7
HAProxy	=2.7.0

Remedy

https://git.haproxy.org/?p=haproxy-2.7.git;a=commit;h=3ca4223c5e1f18a19dc93b0b09ffdbd295554d46

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is CVE-2023-25950?
CVE-2023-25950 is a HTTP request/response smuggling vulnerability in HAProxy versions 2.7.0 and 2.6.1 to 2.6.7.
How does CVE-2023-25950 affect HAProxy?
CVE-2023-25950 allows a remote attacker to alter a legitimate user's request, potentially obtaining sensitive information or causing a denial-of-service (DoS) condition.
What is the severity of CVE-2023-25950?
The severity of CVE-2023-25950 is high with a CVSS score of 7.3.
Which versions of HAProxy are affected by CVE-2023-25950?
HAProxy versions 2.7.0 and 2.6.1 to 2.6.7 are affected by CVE-2023-25950.
How can I mitigate the vulnerability CVE-2023-25950?
To mitigate the vulnerability, it is recommended to update to a version of HAProxy that includes the fix provided by the vendor.

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vendor/haproxy
canonical/aprox aproxengine
version/aprox aproxengine/2.6.1
version/aprox aproxengine/2.6.7
version/aprox aproxengine/2.7.0
canonical/haproxy
version/haproxy/2.6.1
version/haproxy/2.6.7
version/haproxy/2.7.0

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