Improper Resource Shutdown or Release Affecting mod_session package, versions <0:2.4.37-64.module+el8.10.0+90271+3bc76a16


Severity

Recommended
0.0
medium
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.11% (46th percentile)

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  • Snyk IDSNYK-ORACLE8-MODSESSION-7163232
  • published30 May 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 Oracle:8 mod_session to version 0:2.4.37-64.module+el8.10.0+90271+3bc76a16 or higher.
This issue was patched in ELSA-2024-3121.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mod_session package and not the mod_session package as distributed by Oracle. See How to fix? for Oracle: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