Executive Summary

Summary
Title Ruby vulnerabilities
Informations
NameUSN-4201-1First vendor Publication2019-11-26
VendorUbuntuLast vendor Modification2019-11-26
Severity (Vendor) N/ARevisionN/A

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base ScoreN/AAttack RangeN/A
Cvss Impact ScoreN/AAttack ComplexityN/A
Cvss Expoit ScoreN/AAuthenticationN/A
Calculate full CVSS 2.0 Vectors scores

Detail

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 19.10 - Ubuntu 19.04 - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in Ruby.

Software Description: - ruby2.5: Interpreter of object-oriented scripting language Ruby - ruby2.3: Object-oriented scripting language

Details:

It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this issue to pass path matching what can lead to an unauthorized access. (CVE-2019-15845)

It was discovered that Ruby incorrectly handled certain regular expressions. An attacker could use this issue to cause a denial of service. (CVE-2019-16201)

It was discovered that Ruby incorrectly handled certain HTTP headers. An attacker could possibly use this issue to execute arbitrary code. (CVE-2019-16254)

It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. (CVE-2019-16255)

Update instructions:

The problem can be corrected by updating your system to the following package versions:

Ubuntu 19.10:
libruby2.5 2.5.5-4ubuntu2.1
ruby2.5 2.5.5-4ubuntu2.1

Ubuntu 19.04:
libruby2.5 2.5.5-1ubuntu1.1
ruby2.5 2.5.5-1ubuntu1.1

Ubuntu 18.04 LTS:
libruby2.5 2.5.1-1ubuntu1.6
ruby2.5 2.5.1-1ubuntu1.6

Ubuntu 16.04 LTS:
libruby2.3 2.3.1-2~ubuntu16.04.14
ruby2.3 2.3.1-2~ubuntu16.04.14

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4201-1
CVE-2019-15845, CVE-2019-16201, CVE-2019-16254, CVE-2019-16255

Package Information:
https://launchpad.net/ubuntu/+source/ruby2.5/2.5.5-4ubuntu2.1
https://launchpad.net/ubuntu/+source/ruby2.5/2.5.5-1ubuntu1.1
https://launchpad.net/ubuntu/+source/ruby2.5/2.5.1-1ubuntu1.6
https://launchpad.net/ubuntu/+source/ruby2.3/2.3.1-2~ubuntu16.04.14

Original Source

Url : http://www.ubuntu.com/usn/USN-4201-1

Alert History

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0
DateInformations
2019-11-26 21:19:20
  • First insertion