ALPINE-CVE-2021-3448

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Source
https://security.alpinelinux.org/vuln/CVE-2021-3448
Import Source
https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json
JSON Data
https://api.osv.dev/v1/vulns/ALPINE-CVE-2021-3448
Upstream
Published
2021-04-08T23:15:12Z
Modified
2026-08-27T22:18:01Z
Severity
  • 4.0 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N CVSS Calculator
Summary
[none]
Details

A flaw was found in dnsmasq in versions before 2.85. When configured to use a specific server for a given network interface, dnsmasq uses a fixed port while forwarding queries. An attacker on the network, able to find the outgoing port used by dnsmasq, only needs to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw makes a DNS Cache Poisoning attack much easier. The highest threat from this vulnerability is to data integrity.

References

Affected packages

Alpine:v3.10
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.11
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.12
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.13
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.14
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.15
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.16
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.17
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.18
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.19
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.20
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.21
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.22
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.23
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"
Alpine:v3.24
dnsmasq

Package

Name
dnsmasq
Purl
pkg:apk/alpine/dnsmasq?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.85-r0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3448.json"