CVE-2023-0836 : An information leak vulnerability was discovered in HAProxy 2.1, 2.2 before 2.2.

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.

Published 2023-03-29 21:15:08

Updated 2023-04-14 04:15:18

Source Red Hat, Inc.

View at NVD, CVE.org

Vulnerability category: Information leak

Products affected by CVE-2023-0836

Haproxy » Haproxy
Versions from including (>=) 2.2.0 and before (<) 2.2.27
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
Matching versions
Haproxy » Haproxy
Versions from including (>=) 2.6.0 and up to, including, (<=) 2.6.8
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
Matching versions
Haproxy » Haproxy
Versions from including (>=) 2.4.0 and up to, including, (<=) 2.4.21
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
Matching versions
Haproxy » Haproxy
Versions from including (>=) 2.5.0 and up to, including, (<=) 2.5.11
cpe:2.3:a:haproxy:haproxy:*:*:*:*:*:*:*:*
Matching versions
Haproxy » Haproxy » Version: 2.7.0
cpe:2.3:a:haproxy:haproxy:2.7.0:*:*:*:*:*:*:*
Matching versions
Haproxy » Haproxy » Version: 2.3.0
cpe:2.3:a:haproxy:haproxy:2.3.0:*:*:*:*:*:*:*
Matching versions
Haproxy » Haproxy » Version: 2.1.0
cpe:2.3:a:haproxy:haproxy:2.1.0:*:*:*:*:*:*:*
Matching versions

Threat overview for CVE-2023-0836

Top countries where our scanners detected CVE-2023-0836

Top open port discovered on systems with this issue 80

IPs affected by CVE-2023-0836 55

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2023-0836!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2023-0836

EPSS FAQ

0.18%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 55 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2023-0836

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: None Availability: None

CWE ids for CVE-2023-0836

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Assigned by: secalert@redhat.com (Secondary)
CWE-459 Incomplete Cleanup

The product does not properly "clean up" and remove temporary or supporting resources after they have been used.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2023-0836

https://www.debian.org/security/2023/dsa-5388

Debian -- Security Information -- DSA-5388-1 haproxy
https://git.haproxy.org/?p=haproxy.git;a=commitdiff;h=2e6bf0a

Repositories - haproxy.git/commitdiff
Mailing List;Patch