CVE Vulnerability

CVE-2021-43083

Apache PLC4X - PLC4C (Only the C language implementation was effected) was vulnerable to an unsigned integer underflow flaw inside the tcp transport. Users should update to 0.9.1, which addresses this issue. However, in order to exploit this vulnerability, a user would have to actively connect to a mallicious device which could send a response with invalid content. Currently we consider the probability of this being exploited as quite minimal, however this could change in the future, especially with the industrial networks growing more and more together.

6.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

8.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://lists.apache.org/thread/jxx6qc84z60xbbhn6vp2s5qf09psrtc7 Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/12/20/2 Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:apache:plc4x:*:*:*:*:*:*:*:*
Information

Published : 2021-12-19 09:15

Updated : 2022-01-04 06:00

NVD link : CVE-2021-43083

Mitre link : CVE-2021-43083

Products Affected
No products.
CWE
CWE-191

Integer Underflow (Wrap or Wraparound)