CVE-2023-45288 Affecting php-fpm_exporter package, versions <2.2.0-r3


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.04% (16th percentile)

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  • Snyk IDSNYK-WOLFILATEST-PHPFPMEXPORTER-6612084
  • published13 Apr 2024
  • disclosed4 Apr 2024

Introduced: 4 Apr 2024

CVE-2023-45288  (opens in a new tab)

How to fix?

Upgrade Wolfi php-fpm_exporter to version 2.2.0-r3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream php-fpm_exporter package and not the php-fpm_exporter package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

An attacker may cause an HTTP/2 endpoint to read arbitrary amounts of header data by sending an excessive number of CONTINUATION frames. Maintaining HPACK state requires parsing and processing all HEADERS and CONTINUATION frames on a connection. When a request's headers exceed MaxHeaderBytes, no memory is allocated to store the excess headers, but they are still parsed. This permits an attacker to cause an HTTP/2 endpoint to read arbitrary amounts of header data, all associated with a request which is going to be rejected. These headers can include Huffman-encoded data which is significantly more expensive for the receiver to decode than for an attacker to send. The fix sets a limit on the amount of excess header frames we will process before closing a connection.

CVSS Scores

version 3.1