WaratekVRT Sign in

CVE-2019-20907 Python

Affected softwarePython
Severity7.5 High CVSS 3.1 3 scores
WeaknessCWE-835
Published13 Jul 2020
Updated14 Oct 2026

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 6 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 3.0% chance in 30 days

Waratek protection

Outside Waratek scope

A Java vulnerability, but not one Waratek protects. It affects only Java on a user's desktop (applets, Web Start, JavaFX, the installer), sits in a product the Waratek agent can't be installed into, or is in a package we don't expect in business applications. The decision below says which.

  • Protection none
  • Action not pursued none
  • Review human Researcher
  • Record active
Decided by Manual classification of this CVE in the legacy dataset
Finding A manual classification set this CVE's status to Outside Waratek scope, but the CVE names a tracked product.

CVSS

7.5 HIGH v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 3 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H NVD Primary published
CVSS 3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CISA-ADP Secondary
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:N/I:N/A:P NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2023 ↗ CPU 2023-Q4 Oracle Fusion Middleware / Centralized Thirdparty Jars (Python) (14.1.1.0.0)
Oracle Critical Patch Update April 2023 ↗ CPU 2023-Q2 Oracle Fusion Middleware / Third Party (Jython) (12.2.1.4.0)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Fusion Middleware Centralized Thirdparty Jars (Python) 14.1.1.0.0 14.1.1.0.0
Oracle Fusion Middleware Third Party (Jython) 12.2.1.4.0 12.2.1.4.0

Products and versions

8 products, 17 version entries
SourceVendorProductSchemeAffected versions
nvd canonical ubuntu linux generic 12.04 · 14.04 · 16.04 · 18.04 · 20.04
nvd debian debian linux generic 9.0
nvd fedoraproject fedora generic 31 · 32
nvd netapp active iq unified manager generic ≥ 9.5
nvd netapp cloud volumes ontap mediator generic any version
nvd opensuse leap generic 15.1 · 15.2
nvd oracle zfs storage appliance kit generic 8.8
nvd python python generic ≥ 3.5.0 and < 3.5.10 · ≥ 3.6.0 and < 3.6.12 · ≥ 3.7.0 and < 3.7.9 · ≥ 3.8.0 and < 3.8.5

References

URLTags
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 Mailing List, Third Party Advisory
https://bugs.python.org/issue39017 Issue Tracking, Vendor Advisory
https://github.com/python/cpython/pull/21454 Patch, 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, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36XI3EEQNMHGOZEI63Y7UV6XZRELYEAU/

Timeline

Published2020-07-13By the CVE Program.
NVD record modified2026-10-14NVD's own last-modified date for this record.