CVE-2019-20907

HIGH

Python < 3.5.10 - Infinite Loop

Title source: rule

Description

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.

References (27)

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00051.html

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00052.html

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00053.html

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00056.html

[Issue Tracking, Vendor Advisory] https://bugs.python.org/issue39017

[Patch, Third Party Advisory] https://github.com/python/cpython/pull/21454

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2020/08/msg00034.html

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2020/11/msg00032.html

[Mailing List] https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html

[Third Party Advisory] https://security.gentoo.org/glsa/202008-01

[Third Party Advisory] https://security.netapp.com/advisory/ntap-20200731-0002/

[Third Party Advisory] https://usn.ubuntu.com/4428-1/

[Patch, Third Party Advisory] https://www.oracle.com/security-alerts/cpujan2021.html

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36XI3EEQNMHGOZEI63Y7UV6XZRELYEAU/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CAXHCY4V3LPAAJOBCJ26ISZ4NUXQXTUZ/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CNHPQGSP2YM3JAUD2VAMPXTIUQTZ2M2U/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CTUNTBJ3POHONQOTLEZC46POCIYYTAKZ/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LE4O3PNDNNOMSKHNUKZKD3NGHIFUFDPX/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NTBKKOLFFNHG6CM4ACDX4APHSD5ZX5N4/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OXI72HIHMXCQFWTULUXDG7VDA2BCYL4Y/

... and 7 more

Scores

CVSS v3 7.5

EPSS 0.0032

EPSS Percentile 54.9%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-835

Status published

Affected Products (14)

python/python < 3.5.10

opensuse/leap

debian/debian_linux

fedoraproject/fedora

canonical/ubuntu_linux

netapp/active_iq_unified_manager

netapp/cloud_volumes_ontap_mediator

oracle/zfs_storage_appliance_kit

Timeline

Published Jul 13, 2020

Tracked Since Feb 18, 2026