IM
IronMonkey Threat Research

CVE-2019-20907 HIGH

Published: 2020-07-13 | Last Modified: 2026-10-07 | Status: Modified

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.

Additional Descriptions (1)

En la biblioteca Lib/tarfile.py en Python versiones hasta 3.8.3, un atacante puede diseñar un archivo TAR conllevando a un bucle infinito cuando se abrió mediante tarfile.open, porque la función _proc_pax carece de comprobación de encabezado

CVSS Metrics

Base Score: 7.5 (HIGH)

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

Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactHIGH

Source: [email protected]

Type: Primary

Exploitability Score: 3.9

Impact Score: 3.6

Base Score: 5.0 (MEDIUM)

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access VectorNETWORK
Access ComplexityLOW
AuthenticationNONE
Confidentiality ImpactNONE
Integrity ImpactNONE
Availability ImpactPARTIAL

Source: [email protected]

Type: Primary

Exploitability Score: 10.0

Impact Score: 2.9

Weaknesses

Source Type Description
[email protected] Primary
en CWE-835
134c704f-9b21-4f2e-91b3-4a467353bcc0 Secondary
en CWE-835

Affected Products

Vendor Product Version Update Type
python python * <built-in method update of dict object at 0x7fd319e50800> Application
python python * <built-in method update of dict object at 0x7fd3408c98c0> Application
python python * <built-in method update of dict object at 0x7fd37018e140> Application
python python * <built-in method update of dict object at 0x7fd3106f2e00> Application
opensuse leap 15.1 <built-in method update of dict object at 0x7fd39c4deb80> Operating System
opensuse leap 15.2 <built-in method update of dict object at 0x7fd39c4de400> Operating System
debian debian_linux 9.0 <built-in method update of dict object at 0x7fd37018cd00> Operating System
fedoraproject fedora 31 <built-in method update of dict object at 0x7fd3106f25c0> Operating System
fedoraproject fedora 32 <built-in method update of dict object at 0x7fd39c4de980> Operating System
canonical ubuntu_linux 12.04 <built-in method update of dict object at 0x7fd384a147c0> Operating System
canonical ubuntu_linux 14.04 <built-in method update of dict object at 0x7fd37018c8c0> Operating System
canonical ubuntu_linux 16.04 <built-in method update of dict object at 0x7fd3408cae00> Operating System
canonical ubuntu_linux 18.04 <built-in method update of dict object at 0x7fd2dbe0d080> Operating System
canonical ubuntu_linux 20.04 <built-in method update of dict object at 0x7fd3703613c0> Operating System
netapp active_iq_unified_manager * <built-in method update of dict object at 0x7fd39c4deb40> Application
netapp cloud_volumes_ontap_mediator - <built-in method update of dict object at 0x7fd37018c600> Application
oracle zfs_storage_appliance_kit 8.8 <built-in method update of dict object at 0x7fd319e50c00> Application

Affected Configurations

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
Yes cpe:2.3:a:python:python:*:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
Yes cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
Yes cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
Yes cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
Yes cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
Yes cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
Yes cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:netapp:active_iq_unified_manager:*:*:*:*:*:vsphere:*:*
Yes cpe:2.3:a:netapp:cloud_volumes_ontap_mediator:-:*:*:*:*:*:*:*

Operator: OR

Vulnerable CPE
Yes cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*

References