CVE-2021-31889

CVSS V2 Medium 6.4 CVSS V3 Critical 9.1
Description
A vulnerability has been identified in APOGEE MBC (PPC) (BACnet) (All versions), APOGEE MBC (PPC) (P2 Ethernet) (All versions), APOGEE MEC (PPC) (BACnet) (All versions), APOGEE MEC (PPC) (P2 Ethernet) (All versions), APOGEE PXC Compact (BACnet) (All versions < V3.5.4), APOGEE PXC Compact (P2 Ethernet) (All versions < V2.8.19), APOGEE PXC Modular (BACnet) (All versions < V3.5.4), APOGEE PXC Modular (P2 Ethernet) (All versions < V2.8.19), Capital VSTAR (All versions with enabled Ethernet options), Desigo PXC00-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC00-U (All versions >= V2.3 and < V6.30.016), Desigo PXC001-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC100-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC12-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC128-U (All versions >= V2.3 and < V6.30.016), Desigo PXC200-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC22-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC22.1-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC36.1-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC50-E.D (All versions >= V2.3 and < V6.30.016), Desigo PXC64-U (All versions >= V2.3 and < V6.30.016), Desigo PXM20-E (All versions >= V2.3 and < V6.30.016), Nucleus NET (All versions), Nucleus ReadyStart V3 (All versions < V2017.02.4), Nucleus Source Code (All versions), PLUSCONTROL 1st Gen (All versions), SIMOTICS CONNECT 400 (All versions < V0.5.0.0), TALON TC Compact (BACnet) (All versions < V3.5.4), TALON TC Modular (BACnet) (All versions < V3.5.4). Malformed TCP packets with a corrupted SACK option leads to Information Leaks and Denial-of-Service conditions. (FSMD-2021-0015)
Overview
  • CVE ID
  • CVE-2021-31889
  • Assigner
  • productcert@siemens.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2021-11-09T12:15:09
  • Last Modified Date
  • 2022-05-20T13:15:13
Weakness Enumerations
CWE URL
CWE-191 http://cwe.mitre.org/data/definitions/191.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:siemens:capital_vstar:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:siemens:nucleus_net:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:siemens:nucleus_readystart_v3:*:*:*:*:*:*:*:* 1 OR 2017.02.3
cpe:2.3:a:siemens:nucleus_source_code:*:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:siemens:apogee_modular_building_controller_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:apogee_modular_building_controller:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:apogee_modular_equiment_controller_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:apogee_modular_equiment_controller:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:apogee_pxc_compact_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:apogee_pxc_compact:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:apogee_pxc_modular_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:apogee_pxc_modular:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:talon_tc_compact_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:talon_tc_compact:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:talon_tc_modular_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:talon_tc_modular:-:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:siemens:apogee_modular_building_controller_firmware:*:*:*:*:*:*:*:* 1 OR
cpe:2.3:h:siemens:apogee_modular_building_controller:-:*:*:*:*:*:*:* 0 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • PARTIAL
  • Base Score
  • 6.4
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 4.9
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:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.1
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.2
References
Reference URL Reference Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf Vendor Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-845392.pdf
https://cert-portal.siemens.com/productcert/pdf/ssa-223353.pdf
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-31889
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-31889
History
Created Old Value New Value Data Type Notes
2022-05-10 15:43:38 Added to TrackCVE
2022-12-05 14:07:17 2021-11-09T12:15Z 2021-11-09T12:15:09 CVE Published Date updated
2022-12-05 14:07:17 2022-05-20T13:15:13 CVE Modified Date updated
2022-12-05 14:07:17 Modified Vulnerability Status updated