UBUNTU-CVE-2019-16782

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Source
https://ubuntu.com/security/notices/UBUNTU-CVE-2019-16782
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-16782.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-16782
Related
Published
2019-12-18T20:15:00Z
Modified
2019-12-18T20:15:00Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

There's a possible information leak / session hijack vulnerability in Rack (RubyGem rack). This vulnerability is patched in versions 1.6.12 and 2.0.8. Attackers may be able to find and hijack sessions by using timing attacks targeting the session id. Session ids are usually stored and indexed in a database that uses some kind of scheme for speeding up lookups of that session id. By carefully measuring the amount of time it takes to look up a session, an attacker may be able to find a valid session id and hijack the session. The session id itself may be generated randomly, but the way the session is indexed by the backing store does not use a secure comparison.

References

Affected packages

Ubuntu:Pro:14.04:LTS / ruby-rack

Package

Name
ruby-rack
Purl
pkg:deb/ubuntu/ruby-rack@1.5.2-3+deb8u3ubuntu1~esm3?arch=src?distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.5.2-3+deb8u3ubuntu1~esm3

Affected versions

1.*

1.5.2-1
1.5.2-1ubuntu0.1~esm1
1.5.2-3+deb8u3ubuntu1~esm2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "ruby-rack": "1.5.2-3+deb8u3ubuntu1~esm3",
            "librack-ruby": "1.5.2-3+deb8u3ubuntu1~esm3",
            "librack-ruby1.8": "1.5.2-3+deb8u3ubuntu1~esm3",
            "librack-ruby1.9.1": "1.5.2-3+deb8u3ubuntu1~esm3"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / ruby-rack

Package

Name
ruby-rack
Purl
pkg:deb/ubuntu/ruby-rack@1.6.4-3ubuntu0.2+esm1?arch=src?distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.4-3ubuntu0.2+esm1

Affected versions

1.*

1.5.2-4
1.6.4-2
1.6.4-3
1.6.4-3ubuntu0.1
1.6.4-3ubuntu0.2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "ruby-rack": "1.6.4-3ubuntu0.2+esm1"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / ruby-rack

Package

Name
ruby-rack
Purl
pkg:deb/ubuntu/ruby-rack@1.6.4-4ubuntu0.2+esm1?arch=src?distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.6.4-4ubuntu0.2+esm1

Affected versions

1.*

1.6.4-4
1.6.4-4ubuntu0.1
1.6.4-4ubuntu0.2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "ruby-rack": "1.6.4-4ubuntu0.2+esm1"
        }
    ]
}

Ubuntu:20.04:LTS / ruby-rack

Package

Name
ruby-rack

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.0.6-3
2.0.7-2
2.0.7-2ubuntu0.1

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:Pro:20.04:LTS / ruby-rack

Package

Name
ruby-rack
Purl
pkg:deb/ubuntu/ruby-rack@2.0.7-2ubuntu0.1+esm1?arch=src?distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.0.7-2ubuntu0.1+esm1

Affected versions

2.*

2.0.6-3
2.0.7-2
2.0.7-2ubuntu0.1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "ruby-rack": "2.0.7-2ubuntu0.1+esm1"
        }
    ]
}