module: github.com/ulikunitz/xz
versions:
  - fixed: v0.5.8
description: |
  An attacker can construct a series of bytes such that calling
  [`Reader.Read`] on the bytes could cause an infinite loop. If
  parsing user supplied input, this may be used as a denial of
  service vector.
published: 2021-04-14T12:00:00Z
credit: "@0xdecaf"
symbols:
  - readUvarint
links:
  commit: https://github.com/ulikunitz/xz/commit/69c6093c7b2397b923acf82cb378f55ab2652b9b
  context:
    - https://github.com/ulikunitz/xz/issues/35
    - https://github.com/ulikunitz/xz/security/advisories/GHSA-25xm-hr59-7c27
cve_metadata:
  id: CVE-9999-0004
  cwe: "CWE-190: Integer Overflow or Wraparound"
  description: |
    Integer overflow in github.com/ulikunitz/xz before v0.5.8 allows attackers
    to cause denial of service via maliciously crafted input.