PSF-2020-2

vendorUSosv

Infinite loop in tarfile module while opening a crafted file

view advisory published 2020-07-13Licence: per source

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.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2019-20907US	high7.5	2.99% (87th)	—	2020-07-13
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 valida…

references

External citations — patches, advisories, analysis.

https://bugs.python.org/issue39017REPORT

scry

Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.

Free scan