Logstash Inefficient Regular Expression Complexity (ESA-2024-48)
On October 28th, 2024, Ruby announced CVE-2024-49761 in rexml which can lead to ReDoS when parsing XML that has many digits between &# and x...; in a hex numeric character reference (&#x...;).
The issue only affects users that use the Logstash XML filter plugin, that can parse untrusted XML data.
Affected Versions:
Logstash versions 7.0.0 <= 8.15.2
Solutions and Mitigations:
The issue is resolved in version 8.15.3, 8.16.0 and higher.
Severity: CVSSv3.1: 5.3(Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVE ID: CVE-2024-49761