SB2021040632 - Ubuntu update for ruby-rack 

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Main Vulnerability Database SB2021040632

SB2021040632 - Ubuntu update for ruby-rack

Published: April 6, 2021

Security Bulletin ID SB2021040632
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Path traversal (CVE-ID: CVE-2020-8161)

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

The vulnerability exists due to input validation error when processing directory traversal sequences in Rack::Directory app. A remote attacker can send a specially crafted request and read arbitrary files on the system.


2) Missing support for integrity check (CVE-ID: CVE-2020-8184)

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to missing integrity check of secure cookies. A remote attacker can alter the cookies in the requests and bypass implemented security restrictions.


Remediation

Install update from vendor's website.

References