CVE-2021-28040
First published: Fri Mar 05 2021(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OSSEC | =3.6.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-28040?
CVE-2021-28040 has a high severity due to its potential to cause a denial of service through a segmentation fault.
How do I fix CVE-2021-28040?
To fix CVE-2021-28040, update to a patched version of OSSEC that controls recursion in XML processing.
What systems are affected by CVE-2021-28040?
CVE-2021-28040 specifically affects OSSEC version 3.6.0.
What kind of attack does CVE-2021-28040 facilitate?
CVE-2021-28040 facilitates a denial of service attack through uncontrolled recursion in XML parsing.
Can CVE-2021-28040 lead to data breaches?
While CVE-2021-28040 primarily leads to service disruption, it does not directly allow for unauthorized data access.
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