CVE Vulnerability

CVE-2021-28040

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/ossec/ossec-hids/issues/1953 Exploit Issue Tracking
Configurations

Configuration 1

cpe:2.3:a:ossec:ossec:3.6.0:*:*:*:*:*:*:*
Information

Published : 2021-03-05 06:15

Updated : 2021-03-09 03:41

NVD link : CVE-2021-28040

Mitre link : CVE-2021-28040

Products Affected
No products.
CWE
CWE-674

Uncontrolled Recursion