SB2020031840 - Red Hat Enterprise Linux 7 update for python-virtualenv

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Main Vulnerability Database SB2020031840

SB2020031840 - Red Hat Enterprise Linux 7 update for python-virtualenv

Published: March 18, 2020

Security Bulletin ID SB2020031840
CSH Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 33% Medium 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Credentials management (CVE-ID: CVE-2018-18074)

CWE-ID: CWE-255 - Credentials Management

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber


The vulnerability allows a remote attacker to access sensitive information on a targeted system.

The vulnerability exists due to the software does not remove the HTTP Authorization header when following an HTTPS-to-HTTP redirect with the same hostname. A remote attacker who is able to perform a man-in-the-middle attack can sniff network traffic in transit between two systems on the targeted network and access sensitive information, such as user credentials.

2) Information disclosure (CVE-ID: CVE-2018-20060)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green


The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to Authorization HTTP header is not removed from the HTTP request during request redirection in "urllib3/util/retry.py". A remote attacker can intercept the request and gain access to sensitive information, passed via Authorization HTTP header.


3) CRLF injection (CVE-ID: CVE-2019-11236)

CWE-ID: CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green


The vulnerability allows a remote attacker to perform a spoofing attack.

The vulnerability exists due to insufficient filtration of user-supplied data passed via HTTP request parameters to urllib3 library. A remote attacker can pass specially crafted data that contains CRLF sequences and perform a spoofing attack.


Remediation

Install update from vendor's website.

References