Allocation of Resources Without Limits or Throttling Affecting openssl-libs package, versions <1:3.5.5-4.el10_2


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.51% (40th percentile)

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  • Snyk IDSNYK-CENTOS10-OPENSSLLIBS-17292243
  • published11 Jun 2026
  • disclosed9 Jun 2026

Introduced: 9 Jun 2026

NewCVE-2026-34183  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Centos:10 openssl-libs to version 1:3.5.5-4.el10_2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openssl-libs package and not the openssl-libs package as distributed by Centos. See How to fix? for Centos:10 relevant fixed versions and status.

Issue summary: Remote peer may exhaust heap memory of the QUIC server or client by flooding it with packets containing PATH_CHALLENGE frames.

Impact summary: A malicious remote peer can cause an unbounded memory allocation which can lead to an abnormal termination of the application acting as a QUIC client or server and a Denial of Service.

A remote peer may exhaust heap memory by flooding the local QUIC stack with PATH_CHALLENGE frames. The local QUIC stack allocates a PATH_RESPONSE frame for every PATH_CHALLENGE it receives. The allocated PATH_RESPONSE frame gets freed only when the remote peer acknowledges reception of the PATH_RESPONSE frame which will not be done by a malicious peer.

The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue. The QUIC stack is outside of OpenSSL FIPS module boundary.

CVSS Base Scores

version 3.1