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CVE-2023-0836

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Date: March 28, 2023

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.

Language: C

Severity Score

Related Resources (9)

https://people.canonical.com/~ubuntu-security/cve/CVE-2023-0836
https://git.haproxy.org/?p=haproxy.git%3Ba=commitdiff%3Bh=2e6bf0a
https://www.debian.org/security/2023/dsa-5388
https://github.com/haproxy/haproxy/commit/2e6bf0a2722866ae0128a4392fa2375bd1f03ff8
https://nvd.nist.gov/vuln/detail/CVE-2023-0836
https://security-tracker.debian.org/tracker/CVE-2023-0836
https://git.haproxy.org/?p=haproxy.git;a=commitdiff;h=2e6bf0a
https://access.redhat.com/security/cve/CVE-2023-0836
https://www.mend.io/vulnerability-database/CVE-2023-0836

Severity Score

Weakness Type (CWE)

Information Leak / Disclosure

CWE-200

Incomplete Cleanup

CWE-459

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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