TFTP Memory Buffer Reading Vulnerability in APOGEE and Desigo Products by Siemens
CVE-2021-31885

7.5HIGH

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

Summary

A vulnerability exists in various Siemens products where the TFTP server application can be exploited via malformed TFTP commands, allowing unauthorized reading of the contents in the TFTP memory buffer. This issue affects a wide range of products including the APOGEE and Desigo series, posing risks to system integrity and data confidentiality.

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
https://cert-portal.siemens.com/productcert/pdf/ssa-84539...
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.