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Loop with Unreachable Exit Condition ('Infinite Loop')

CVE-2020-16845

High
7.5/10

Summary

The package github.com/ulikunitz/xz versions prior to 0.5.8 can have an infinite read loop in "readUvarint" via invalid inputs.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-835 - Loop with Unreachable Exit Condition

Loops with multiple exits and flags detract from the quality of an application. They tend to make control structures difficult to understand, and introduce the risk of non-termination and other structural problems. The vulnerability “loop with unreachable exit condition” enables attackers to exploit this flaw, leading to denial of service.

References

Advisory Timeline

  • Published