CVE-2021-43083

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Apache Software FoundationApache PLC4XPLC4C <= 0.9.0affected

Weaknesses

  • CWE-119: CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-191: CWE-191 Integer Underflow (Wrap or Wraparound)

ADP Enrichment

CVE Program Container

Additional References

References