zipimporter overflow

Heap overflow in zipimporter module.


  • Disclosure date: 2016-01-21 (Python issue bpo-26171 reported)

Fixed In

Python issue

heap overflow in zipimporter module.

  • Python issue: bpo-26171
  • Creation date: 2016-01-21
  • Reporter: Insu Yun


Integer overflow in the get_data function in zipimport.c in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 allows remote attackers to have unspecified impact via a negative data size value, which triggers a heap-based buffer overflow.


Timeline using the disclosure date 2016-01-21 as reference: