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osvGoogleOSV:PSF-2020-2
HistoryJul 13, 2020 - 12:00 a.m.

Infinite loop in tarfile module while opening a crafted file

2020-07-1300:00:00
Google
osv.dev
12
tarfile module
crafted file
infinite loop
python 3.8.3

AI Score

7.5

Confidence

High

EPSS

0.012

Percentile

85.1%

In Lib/tarfile.py in Python through 3.8.3, an attacker is able to craft a TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.