USN-3553-1

It was discovered that Ruby failed to validate specification names. An attacker could possibly use a maliciously crafted gem to potentially overwrite any file on the filesystem. (CVE-2017-0901)

It was discovered that Ruby was vulnerable to a DNS hijacking vulnerability. An attacker could use this to possibly force the RubyGems client to download and install gems from a server that the attacker controls. (CVE-2017-0902)

It was discovered that Ruby incorrectly handled certain YAML files. An attacker could use this to possibly execute arbitrary code. (CVE-2017-0903)

References

Affected packages

Ubuntu:16.04:LTS / ruby2.3

Package

Name: ruby2.3
Purl: pkg:deb/ubuntu/ruby2.3@2.3.1-2~16.04.6?arch=source&distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.3.1-2~16.04.6

Affected versions

2.*

2.3.0-1

2.3.0-2

2.3.0-4ubuntu2

2.3.0-4ubuntu3

2.3.0-5ubuntu1

2.3.1-2~16.04

2.3.1-2~16.04.2

2.3.1-2~16.04.4

2.3.1-2~16.04.5

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2.3.1-2~16.04.6",
            "binary_name": "libruby2.3"
        },
        {
            "binary_version": "2.3.1-2~16.04.6",
            "binary_name": "ruby2.3"
        },
        {
            "binary_version": "2.3.1-2~16.04.6",
            "binary_name": "ruby2.3-dev"
        },
        {
            "binary_version": "2.3.1-2~16.04.6",
            "binary_name": "ruby2.3-tcltk"
        }
    ]
}

Database specific

{
    "cves_map": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "cves": [
            {
                "id": "CVE-2017-0901",
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ]
            },
            {
                "id": "CVE-2017-0902",
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ]
            },
            {
                "id": "CVE-2017-0903",
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ]
            }
        ]
    }
}