Stack-based Buffer Overflow in Siemens APOGEE and Desigo Products
CVE-2021-31888

8.8HIGH

Key Information:

Vendor

Siemens
Status
Apogee Mbc (ppc) (bacnet)
Apogee Mbc (ppc) (p2 Ethernet)
Apogee Mec (ppc) (bacnet)
Apogee Mec (ppc) (p2 Ethernet)
Vendor
CVE Published:
9 November 2021

What is CVE-2021-31888?

A vulnerability has been detected in Siemens APOGEE and Desigo products, where the FTP server fails to validate the length of the 'MKD/XMKD' command appropriately. This mismanagement can lead to stack-based buffer overflows, potentially resulting in Denial-of-Service conditions as well as enabling Remote Code Execution exploits. It affects a wide range of versions across various models, necessitating immediate attention to mitigate possible risks.

Affected Version(s)

APOGEE MBC (PPC) (BACnet) All versions

APOGEE MBC (PPC) (P2 Ethernet) All versions

APOGEE MEC (PPC) (BACnet) All versions

References

https://cert-portal.siemens.com/productcert/pdf/ssa-11458...
x_refsource_MISC
https://cert-portal.siemens.com/productcert/pdf/ssa-04411...
x_refsource_MISC

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2021-31888 : Stack-based Buffer Overflow in Siemens APOGEE and Desigo Products