ruby1.9.1, ruby2.0, ruby2.3 vulnerabilities

5 April 2018

ruby1.9.1, ruby2.0, ruby2.3 vulnerabilities

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

• Ubuntu 17.10
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Ruby.

Software Description

• ruby2.3 - Object-oriented scripting language
• ruby1.9.1 - Object-oriented scripting language
• ruby2.0 - Object-oriented scripting language

Details

It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to access sensitive information. (CVE-2018-1000073)

It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000074)

It was discovered that Ruby incorrectly handled certain files. An attacker could possibly use this to cause a denial of service. (CVE-2018-1000075)

It was discovered that Ruby incorrectly handled certain crypto signatures. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000076)

It was discovered that Ruby incorrectly handled certain inputs. An attacker could possibly use this to execute arbitrary code. (CVE-2018-1000077, CVE-2018-1000078, CVE-2018-1000079)

Update instructions

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

Ubuntu 17.10

libruby2.3 - 2.3.3-1ubuntu1.4

ruby2.3 - 2.3.3-1ubuntu1.4

Ubuntu 16.04 LTS

libruby2.3 - 2.3.1-2~16.04.7

ruby2.3 - 2.3.1-2~16.04.7

Ubuntu 14.04 LTS

libruby1.9.1 - 1.9.3.484-2ubuntu1.8

libruby2.0 - 2.0.0.484-1ubuntu2.6

ruby1.9.1 - 1.9.3.484-2ubuntu1.8

ruby1.9.3 - 1.9.3.484-2ubuntu1.8

ruby2.0 - 2.0.0.484-1ubuntu2.6

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References

• CVE-2018-1000073
• CVE-2018-1000074
• CVE-2018-1000075
• CVE-2018-1000076
• CVE-2018-1000077
• CVE-2018-1000078
• CVE-2018-1000079