Improper Resource Shutdown or Release Affecting mod_proxy_html package, versions <1:2.4.37-64.module+el8.10.0+1717+030a9fed


Severity

Recommended
0.0
medium
0
10

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.11% (46th percentile)

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  • Snyk IDSNYK-ROCKY8-MODPROXYHTML-7261153
  • published15 Jun 2024
  • disclosed23 Oct 2023

Introduced: 23 Oct 2023

CVE-2023-45802  (opens in a new tab)
CWE-404  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 mod_proxy_html to version 1:2.4.37-64.module+el8.10.0+1717+030a9fed or higher.
This issue was patched in RLSA-2024:3121.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mod_proxy_html package and not the mod_proxy_html package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's memory resources were not reclaimed immediately. Instead, de-allocation was deferred to connection close. A client could send new requests and resets, keeping the connection busy and open and causing the memory footprint to keep on growing. On connection close, all resources were reclaimed, but the process might run out of memory before that.

This was found by the reporter during testing of CVE-2023-44487 (HTTP/2 Rapid Reset Exploit) with their own test client. During "normal" HTTP/2 use, the probability to hit this bug is very low. The kept memory would not become noticeable before the connection closes or times out.

Users are recommended to upgrade to version 2.4.58, which fixes the issue.

CVSS Scores

version 3.1