CVE-2021-27434

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
Products with Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.
Overview
  • CVE ID
  • CVE-2021-27434
  • Assigner
  • ics-cert@hq.dhs.gov
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2021-05-20T14:15:07
  • Last Modified Date
  • 2022-10-07T19:16:26
Weakness Enumerations
CWE URL
CWE-674 http://cwe.mitre.org/data/definitions/674.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:unified-automation:.net_based_opc_ua_client\/server_sdk:*:*:*:*:*:*:*:* 1 OR 3.0.7
cpe:2.3:a:microsoft:.net:3.5:*:*:*:*:*:*:* 0 OR
cpe:2.3:a:microsoft:.net:4.0:*:*:*:*:*:*:* 0 OR
cpe:2.3:a:microsoft:.net:4.5:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • 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:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04 Third Party Advisory US Government Resource
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-27434
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-27434
History
Created Old Value New Value Data Type Notes
2022-05-10 16:14:40 Added to TrackCVE
2022-12-05 02:40:45 2021-05-20T14:15Z 2021-05-20T14:15:07 CVE Published Date updated
2022-12-05 02:40:45 2022-10-07T19:16:26 CVE Modified Date updated
2022-12-05 02:40:45 Analyzed Vulnerability Status updated