Buffer Overflow Vulnerability in Siemens APOGEE and Desigo Products
CVE-2021-31887

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-2021-31887?

A vulnerability exists in various Siemens APOGEE and Desigo products due to improper validation of the 'PWD/XPWD' command length on the FTP server. This flaw can cause stack-based buffer overflows, potentially allowing attackers to execute arbitrary code or cause Denial-of-Service conditions, compromising the integrity and availability of the affected systems.

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

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CVE-2021-31887 : Buffer Overflow Vulnerability in Siemens APOGEE and Desigo Products