UBUNTU-CVE-2023-0836

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Source
https://ubuntu.com/security/CVE-2023-0836
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-0836.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2023-0836
Related
Published
2023-03-27T00:00:00Z
Modified
2025-06-02T17:21:34Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

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 FCGIBEGINREQUEST record. Sensitive data may be disclosed to configured FastCGI backends in an unexpected way.

References

Affected packages

Ubuntu:22.04:LTS / haproxy

Package

Name
haproxy
Purl
pkg:deb/ubuntu/haproxy@2.4.18-0ubuntu1.3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.18-0ubuntu1.3

Affected versions

2.*

2.2.9-2ubuntu2
2.4.8-1
2.4.8-2ubuntu3
2.4.11-1ubuntu1
2.4.12-1ubuntu1
2.4.12-1ubuntu2
2.4.13-1ubuntu1
2.4.14-1ubuntu1
2.4.18-0ubuntu1
2.4.18-0ubuntu1.1
2.4.18-0ubuntu1.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_name": "haproxy",
            "binary_version": "2.4.18-0ubuntu1.3"
        },
        {
            "binary_name": "haproxy-dbgsym",
            "binary_version": "2.4.18-0ubuntu1.3"
        },
        {
            "binary_name": "haproxy-doc",
            "binary_version": "2.4.18-0ubuntu1.3"
        },
        {
            "binary_name": "vim-haproxy",
            "binary_version": "2.4.18-0ubuntu1.3"
        }
    ]
}