CVE-2023-0836
haproxy - security update
7.5
HIGH
CVSS 3.1
EPSS 0.01%
Description
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.
How to fix CVE-2023-0836
To remediate CVE-2023-0836, upgrade the affected package to a fixed version below.
- —upgrade to 2.1.1 or later
- —upgrade to 2.2.9-2+deb11u5 or later
- —upgrade to 2.2.9-2+deb11u5 or later
Is CVE-2023-0836 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- >= 2.1.0, < 2.1.1, >= 2.2.0, < 2.2.27, >= 2.3.0, < 2.3.1, >= 2.4.0, < 2.4.22, >= 2.5.0, < 2.5.12, >= 2.6.0, < 2.6.9, >= 2.7.0, < 2.7.1
- from 0, < 2.2.9-2+deb11u5
- from 0, < 2.2.9-2+deb11u5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |