UBUNTU-CVE-2020-10933

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Source
https://ubuntu.com/security/CVE-2020-10933
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-10933.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-10933
Related
Published
2020-05-04T15:15:00Z
Modified
2020-05-04T15:15:00Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
[none]
Details

An issue was discovered in Ruby 2.5.x through 2.5.7, 2.6.x through 2.6.5, and 2.7.0. If a victim calls BasicSocket#readnonblock(requestedsize, buffer, exception: false), the method resizes the buffer to fit the requested size, but no data is copied. Thus, the buffer string provides the previous value of the heap. This may expose possibly sensitive data from the interpreter.

References

Affected packages

Ubuntu:18.04:LTS / ruby2.5

Package

Name
ruby2.5
Purl
pkg:deb/ubuntu/ruby2.5?arch=src?distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.5.1-1ubuntu1.8

Affected versions

2.*

2.5.0~preview1-1ubuntu2
2.5.0-4ubuntu1
2.5.0-4ubuntu4
2.5.0-5ubuntu1
2.5.0-6ubuntu1
2.5.1-1ubuntu1
2.5.1-1ubuntu1.1
2.5.1-1ubuntu1.2
2.5.1-1ubuntu1.4
2.5.1-1ubuntu1.5
2.5.1-1ubuntu1.6
2.5.1-1ubuntu1.7

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "2.5.1-1ubuntu1.8",
            "binary_name": "libruby2.5"
        },
        {
            "binary_version": "2.5.1-1ubuntu1.8",
            "binary_name": "libruby2.5-dbgsym"
        },
        {
            "binary_version": "2.5.1-1ubuntu1.8",
            "binary_name": "ruby2.5"
        },
        {
            "binary_version": "2.5.1-1ubuntu1.8",
            "binary_name": "ruby2.5-dbgsym"
        },
        {
            "binary_version": "2.5.1-1ubuntu1.8",
            "binary_name": "ruby2.5-dev"
        },
        {
            "binary_version": "2.5.1-1ubuntu1.8",
            "binary_name": "ruby2.5-doc"
        }
    ]
}

Ubuntu:20.04:LTS / ruby2.7

Package

Name
ruby2.7
Purl
pkg:deb/ubuntu/ruby2.7?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.7.0-5ubuntu1.3

Affected versions

2.*

2.7.0-1
2.7.0-2
2.7.0-3
2.7.0-4
2.7.0-4ubuntu1
2.7.0-5ubuntu1
2.7.0-5ubuntu1.1
2.7.0-5ubuntu1.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "low",
    "binaries": [
        {
            "binary_version": "2.7.0-5ubuntu1.3",
            "binary_name": "libruby2.7"
        },
        {
            "binary_version": "2.7.0-5ubuntu1.3",
            "binary_name": "libruby2.7-dbgsym"
        },
        {
            "binary_version": "2.7.0-5ubuntu1.3",
            "binary_name": "ruby2.7"
        },
        {
            "binary_version": "2.7.0-5ubuntu1.3",
            "binary_name": "ruby2.7-dbgsym"
        },
        {
            "binary_version": "2.7.0-5ubuntu1.3",
            "binary_name": "ruby2.7-dev"
        },
        {
            "binary_version": "2.7.0-5ubuntu1.3",
            "binary_name": "ruby2.7-doc"
        }
    ]
}