CVE-2021-31883: Buffer Overflow
First published: Tue Nov 09 2021(Updated: )
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), TALON TC Compact (BACnet) (All versions < V3.5.4), TALON TC Modular (BACnet) (All versions < V3.5.4). When processing a DHCP ACK message, the DHCP client application does not validate the length of the Vendor option(s), leading to Denial-of-Service conditions. (FSMD-2021-0013)
Credit: productcert@siemens.com productcert@siemens.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Siemens Capital Vstar | ||
| Siemens Nucleus NET | ||
| Siemens Nucleus ReadyStart v3 | <2017.02.1 | |
| Siemens Nucleus Source Code | ||
| Siemens Apogee Modular Building Controller Firmware | ||
| Siemens Apogee Modular Building Controller | ||
| Siemens Apogee Modular Equiment Controller Firmware | ||
| Siemens Apogee Modular Equiment Controller | ||
| Siemens Apogee Pxc Compact Firmware | ||
| Siemens Apogee Pxc Compact | ||
| Siemens Apogee Pxc Modular Firmware | ||
| Siemens Apogee Pxc Modular | ||
| Siemens Talon Tc Compact Firmware | ||
| Siemens Talon Tc Compact | ||
| Siemens Talon Tc Modular Firmware | ||
| Siemens Talon Tc Modular | ||
| All of | ||
| Siemens Apogee Modular Building Controller Firmware | ||
| Siemens Apogee Modular Building Controller | ||
| All of | ||
| Siemens Apogee Modular Equiment Controller Firmware | ||
| Siemens Apogee Modular Equiment Controller | ||
| All of | ||
| Siemens Apogee Pxc Compact Firmware | ||
| Siemens Apogee Pxc Compact | ||
| All of | ||
| Siemens Apogee Pxc Modular Firmware | ||
| Siemens Apogee Pxc Modular | ||
| All of | ||
| Siemens Talon Tc Compact Firmware | ||
| Siemens Talon Tc Compact | ||
| All of | ||
| Siemens Talon Tc Modular Firmware | ||
| Siemens Talon Tc Modular |
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Reference Links
- https://cert-portal.siemens.com/productcert/pdf/ssa-044112.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-114589.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-620288.pdf
- https://cert-portal.siemens.com/productcert/html/ssa-114589.html
- https://cert-portal.siemens.com/productcert/html/ssa-044112.html
- https://cert-portal.siemens.com/productcert/html/ssa-620288.html
Frequently Asked Questions
What is the severity of CVE-2021-31883?
The severity of CVE-2021-31883 is high with a value of 7.5.
Which software versions are affected by CVE-2021-31883?
The following software versions are affected by CVE-2021-31883: 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).
How do I fix CVE-2021-31883?
To fix CVE-2021-31883, update to version 3.5.4 or higher for APOGEE PXC Compact (BACnet).
What is the Common Weakness Enumeration (CWE) of CVE-2021-31883?
The Common Weakness Enumeration (CWE) of CVE-2021-31883 is CWE-119.
Where can I find more information about CVE-2021-31883?
You can find more information about CVE-2021-31883 at the following references: [link1], [link2], [link3]
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/author
- agent/weakness
- agent/softwarecombine
- agent/type
- agent/first-publish-date
- collector/mitre-cve
- source/MITRE
- agent/references
- agent/severity
- agent/last-modified-date
- agent/description
- agent/event
- agent/tags
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- vendor/siemens
- canonical/siemens capital vstar
- canonical/siemens nucleus net
- canonical/siemens nucleus readystart v3
- canonical/siemens nucleus source code
- canonical/siemens apogee modular building controller firmware
- canonical/siemens apogee modular building controller
- canonical/siemens apogee modular equiment controller firmware
- canonical/siemens apogee modular equiment controller
- canonical/siemens apogee pxc compact firmware
- canonical/siemens apogee pxc compact
- canonical/siemens apogee pxc modular firmware
- canonical/siemens apogee pxc modular
- canonical/siemens talon tc compact firmware
- canonical/siemens talon tc compact
- canonical/siemens talon tc modular firmware
- canonical/siemens talon tc modular