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CVE-2019-20907

HIGHCVSS 7.5/10EPSS 6.30%

Last modified

CVE-2019-20907 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 6.30% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
6.30%

92.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
PythonPython>= 3.5.0, < 3.5.10
PythonPython>= 3.6.0, < 3.6.12
PythonPython>= 3.7.0, < 3.7.9
PythonPython>= 3.8.0, < 3.8.5
OpensuseLeap15.1
OpensuseLeap15.2
DebianDebian Linux9.0
FedoraprojectFedora31
FedoraprojectFedora32
CanonicalUbuntu Linux12.04
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux18.04
CanonicalUbuntu Linux20.04
NetappActive Iq Unified Manager>= 9.5
NetappCloud Volumes Ontap MediatorAll versions
OracleZfs Storage Appliance Kit8.8

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-20907?
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.
How severe is CVE-2019-20907?
CVE-2019-20907 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 6.30% probability of exploitation in the next 30 days.
How do I fix CVE-2019-20907?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-20907?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST