CVE-2021-28040
HIGHOSSEC 3.6.0 - Denial of Service via Uncontrolled Recursion in os_xml.c
Title source: llmDescription
An issue was discovered in OSSEC 3.6.0. An uncontrolled recursion vulnerability in os_xml.c occurs when a large number of opening and closing XML tags is used. Because recursion is used in _ReadElem without restriction, an attacker can trigger a segmentation fault once unmapped memory is reached.
References (1)
Core 1
Core References
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://github.com/ossec/ossec-hids/issues/1953
Scores
CVSS v3
7.5
EPSS
0.0119
EPSS Percentile
63.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-674
Status
published
Products (1)
ossec/ossec
3.6.0
Published
Mar 05, 2021
Tracked Since
Feb 18, 2026