CVE-2021-28040

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
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.
Overview
  • CVE ID
  • CVE-2021-28040
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-03-05T18:15:13
  • Last Modified Date
  • 2021-03-09T15:41:19
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:ossec:ossec:3.6.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:N/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://github.com/ossec/ossec-hids/issues/1953 Exploit Issue Tracking Third Party Advisory
History
Created Old Value New Value Data Type Notes
2022-05-10 07:20:35 Added to TrackCVE
2022-12-05 23:13:46 2021-03-05T18:15Z 2021-03-05T18:15:13 CVE Published Date updated
2022-12-05 23:13:46 2021-03-09T15:41:19 CVE Modified Date updated
2022-12-05 23:13:46 Analyzed Vulnerability Status updated