HAProxy FCGI_BEGIN_REQUEST Record information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in HAProxy and classified as problematic. This vulnerability affects unknown code of the component FCGI_BEGIN_REQUEST Record Handler. Performing a manipulation results in information disclosure. This vulnerability is known as CVE-2023-0836. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, was found in HAProxy (Firewall Software) (the affected version unknown). This affects an unknown part of the component FCGI_BEGIN_REQUEST Record Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

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.

The weakness was published 03/30/2023. It is possible to read the advisory at git.haproxy.org. This vulnerability is uniquely identified as CVE-2023-0836 since 02/14/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.haproxy.org. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: git.haproxy.org

Timelineinfo

02/14/2023 🔍
03/30/2023 +43 days 🔍
03/30/2023 +0 days 🔍
04/20/2023 +21 days 🔍

Sourcesinfo

Advisory: git.haproxy.org
Status: Confirmed

CVE: CVE-2023-0836 (🔍)
GCVE (CVE): GCVE-0-2023-0836
GCVE (VulDB): GCVE-100-224535

Entryinfo

Created: 03/30/2023 10:49
Updated: 04/20/2023 09:52
Changes: 03/30/2023 10:49 (39), 04/20/2023 09:52 (11)
Complete: 🔍
Cache ID: 216::103

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