UBUNTU-CVE-2020-25681

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Source
https://ubuntu.com/security/CVE-2020-25681
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-25681.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-25681
Related
Published
2021-01-19T00:00:00Z
Modified
2024-10-15T14:07:39Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in the way RRSets are sorted before validating with DNSSEC data. An attacker on the network, who can forge DNS replies such as that they are accepted as valid, could use this flaw to cause a buffer overflow with arbitrary data in a heap memory segment, possibly executing code on the machine. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

References

Affected packages

Ubuntu:Pro:14.04:LTS / dnsmasq

Package

Name
dnsmasq
Purl
pkg:deb/ubuntu/dnsmasq?arch=src?distro=trusty/esm

Affected ranges

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

Affected versions

2.*

2.66-4ubuntu1
2.67-1
2.68-1
2.68-1ubuntu0.1
2.68-1ubuntu0.2
2.68-1ubuntu0.2+esm1
2.68-1ubuntu0.2+esm2

Ecosystem specific 

{
    "ubuntu_priority": "medium"
}

Ubuntu:16.04:LTS / dnsmasq

Package

Name
dnsmasq
Purl
pkg:deb/ubuntu/dnsmasq?arch=src?distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.75-1ubuntu0.16.04.7

Affected versions

2.*

2.75-1
2.75-1ubuntu0.16.04.1
2.75-1ubuntu0.16.04.2
2.75-1ubuntu0.16.04.3
2.75-1ubuntu0.16.04.4
2.75-1ubuntu0.16.04.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "2.75-1ubuntu0.16.04.7",
            "binary_name": "dnsmasq"
        },
        {
            "binary_version": "2.75-1ubuntu0.16.04.7",
            "binary_name": "dnsmasq-base"
        },
        {
            "binary_version": "2.75-1ubuntu0.16.04.7",
            "binary_name": "dnsmasq-utils"
        }
    ]
}

Ubuntu:18.04:LTS / dnsmasq

Package

Name
dnsmasq
Purl
pkg:deb/ubuntu/dnsmasq?arch=src?distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.79-1ubuntu0.2

Affected versions

2.*

2.78-1
2.78-3
2.79-1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "2.79-1ubuntu0.2",
            "binary_name": "dnsmasq"
        },
        {
            "binary_version": "2.79-1ubuntu0.2",
            "binary_name": "dnsmasq-base"
        },
        {
            "binary_version": "2.79-1ubuntu0.2",
            "binary_name": "dnsmasq-base-lua"
        },
        {
            "binary_version": "2.79-1ubuntu0.2",
            "binary_name": "dnsmasq-utils"
        }
    ]
}

Ubuntu:20.04:LTS / dnsmasq

Package

Name
dnsmasq
Purl
pkg:deb/ubuntu/dnsmasq?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.80-1.1ubuntu1.2

Affected versions

2.*

2.80-1ubuntu2
2.80-1ubuntu4
2.80-1.1ubuntu1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "2.80-1.1ubuntu1.2",
            "binary_name": "dnsmasq"
        },
        {
            "binary_version": "2.80-1.1ubuntu1.2",
            "binary_name": "dnsmasq-base"
        },
        {
            "binary_version": "2.80-1.1ubuntu1.2",
            "binary_name": "dnsmasq-base-lua"
        },
        {
            "binary_version": "2.80-1.1ubuntu1.2",
            "binary_name": "dnsmasq-utils"
        }
    ]
}