7.5
CWE
459 200
Advisory Published
Updated

CVE-2023-0836: Infoleak

First published: Wed Mar 29 2023(Updated: )

An information leak vulnerability was discovered in HAProxy 2.1, 2.2 before 2.2.27, 2.3, 2.4 before 2.4.21, 2.5 before 2.5.11, 2.6 before 2.6.8, 2.7 before 2.7.1. There are 5 bytes left uninitialized in the connection buffer when encoding the FCGI_BEGIN_REQUEST record. Sensitive data may be disclosed to configured FastCGI backends in an unexpected way.

Credit: secalert@redhat.com

Affected SoftwareAffected VersionHow to fix
Haproxy Haproxy>=2.2.0<2.2.27
Haproxy Haproxy>=2.4.0<=2.4.21
Haproxy Haproxy>=2.5.0<=2.5.11
Haproxy Haproxy>=2.6.0<=2.6.8
Haproxy Haproxy=2.1.0
Haproxy Haproxy=2.3.0
Haproxy Haproxy=2.7.0
debian/haproxy
1.8.19-1+deb10u3
1.8.19-1+deb10u4
2.2.9-2+deb11u5
2.6.12-1
2.6.15-1

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is the vulnerability ID for this information leak vulnerability?

    The vulnerability ID for this information leak vulnerability is CVE-2023-0836.

  • What is the severity of CVE-2023-0836?

    The severity of CVE-2023-0836 is high with a severity value of 7.5.

  • Which software versions are affected by CVE-2023-0836?

    The affected software versions of CVE-2023-0836 include HAProxy 2.1, 2.2 (up to 2.2.27), 2.3, 2.4 (up to 2.4.21), 2.5 (up to 2.5.11), 2.6 (up to 2.6.8), and 2.7 (up to 2.7.1).

  • How can an attacker exploit this vulnerability?

    An attacker can exploit this vulnerability by sending specially crafted requests to the vulnerable HAProxy server which could lead to an information leak.

  • How can I fix CVE-2023-0836?

    To fix CVE-2023-0836, it is recommended to upgrade to the patched versions of HAProxy, such as 2.2.27, 2.4.21, 2.5.11, 2.6.8, or 2.7.1, depending on the version you are using.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2024 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203