Home/CVE/The vulnerability in the MSC800 in all versions before 4.15 allows for an attacker to predict the TCP initial sequence n
CVE

CVE-2022-27577

The vulnerability in the MSC800 in all versions before 4.15 allows for an attacker to predict the TCP initial sequence n

The vulnerability in the MSC800 in all versions before 4.15 allows for an attacker to predict the TCP initial sequence number. When the TCP sequence is predictable, an attacker can send packets that are forged to appear to come from a trusted computer. These forged packets could compromise services on the MSC800.

SICK has released a new firmware version of the SICK MSC800 and recommends updating to the newest version.

CRITICAL · CVSS 9.1 EPSS 0.00504
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-330Use of Insufficiently Random Values
CWE-342Predictable Exact Value from Previous Values
▤

Affected Products & Versions

1
sick msc800 firmware< 4.15
▣

Scoring & Timeline

9.1
CRITICAL · CVSS v3.1 · psirt@sick.de
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Apr 2022 · 08:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://sick.com/psirtVendor Advisory
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