SB2020110321 - Red Hat Enterprise Linux 8 update for the python27:2.7 module

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Main Vulnerability Database SB2020110321

SB2020110321 - Red Hat Enterprise Linux 8 update for the python27:2.7 module

Published: November 3, 2020 Updated: April 24, 2025

Security Bulletin ID SB2020110321
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Infinite loop (CVE-ID: CVE-2019-20907)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop In Lib/tarfile.py in Python. A remote attacker can create a specially crafted TAR archive leading to an infinite loop when opened by tarfile.open, because _proc_pax lacks header validation.


2) Path traversal (CVE-ID: CVE-2019-20916)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences passed via URL to the install command within the _download_http_url() function in _internal/download.py. A remote attacker can send a specially crafted HTTP request with the Content-Disposition header that contains directory traversal characters in the filename and overwrite the /root/.ssh/authorized_keys file.


Remediation

Install update from vendor's website.

References