Siemens Industrial Products Integer Overflow or Wraparound or Uncontrolled Resource Consumption (ICSA-19-253-03)

high Nessus Network Monitor Plugin ID 720312


A remotely exploitable Integer Overflow or Wraparound or Uncontrolled Resource Consumption vulnerability has been identified in Siemens CM, CP, SIMATIC, SINUMERIK, SINAMICS, SCALANCE, and TIM.


The kernel of the listed devices is affected by an integer overflow when handling TCP Selective Acknowledgements, which could allow a remote attacker to cause a denial-of-service condition. Also, a remote attacker sending specially crafted TCP Selective Acknowledgment (SACK) sequences may cause a denial-of-service condition. And, finally, an attacker may exploit a vulnerability in the TCP retransmission queue when handling SACK to cause a denial-of-service condition.


Perform vendor recommended mitigations and apply available vendor upgrades.

See Also

Plugin Details

Severity: High

ID: 720312

Family: SCADA

Published: 11/3/2019

Updated: 11/3/2019

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Patch Publication Date: 6/20/2019

Vulnerability Publication Date: 6/18/2019

Reference Information

CVE: CVE-2019-11477