4.0
MEDIUM
CVE-2021-3448
Apache dnsmasq DNS Cache Poisoning Vulnerability
Description

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.

INFO

Published Date :

April 8, 2021, 11:15 p.m.

Last Modified :

Nov. 21, 2024, 6:21 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

2.2
Public PoC/Exploit Available at Github

CVE-2021-3448 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-3448 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat enterprise_linux
1 Fedoraproject fedora
1 Oracle communications_cloud_native_core_network_function_cloud_native_environment
1 Thekelleys dnsmasq
: Total Affected Vendor : 4 | Products : 4
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-3448.

URL Resource
https://bugzilla.redhat.com/show_bug.cgi?id=1939368 Exploit Issue Tracking Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
https://security.gentoo.org/glsa/202105-20 Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1939368 Exploit Issue Tracking Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
https://security.gentoo.org/glsa/202105-20 Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

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criminalip/CIP-NSE-Script

The NSE Script plugin integrates with Criminal IP CTI search engine for network scanning, showing IP details like WHOIS, running products, versions, CVEs, etc.

criminalip-api cve cyberthreatintelligence ip portscan

Lua

Updated: 5 months ago
10 stars 2 fork 2 watcher
Born at : Dec. 14, 2022, 1:29 p.m. This repo has been linked 5 different CVEs too.
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n0-traces/cve_monitor

Automatic monitor github cve using Github Actions

Python

Updated: 1 month, 2 weeks ago
1 stars 57 fork 57 watcher
Born at : April 7, 2021, 11:16 a.m. This repo has been linked 1008 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-3448 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-3448 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1939368
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
    Added Reference https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
    Added Reference https://security.gentoo.org/glsa/202105-20
    Added Reference https://www.oracle.com/security-alerts/cpujan2022.html
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/ [No types assigned]
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/ [No types assigned]
    Added Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/ [No types assigned]
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
    Removed Reference Red Hat, Inc. https://lists.fedoraproject.org/archives/list/[email protected]/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
  • Reanalysis by [email protected]

    Oct. 27, 2022

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Mar. 01, 2022

    Action Type Old Value New Value
    Changed Reference Type https://www.oracle.com/security-alerts/cpujan2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 07, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpujan2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Jun. 04, 2021

    Action Type Old Value New Value
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/ Mailing List, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/ Third Party Advisory https://lists.fedoraproject.org/archives/list/[email protected]/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/ Mailing List, Third Party Advisory
    Changed Reference Type https://security.gentoo.org/glsa/202105-20 No Types Assigned https://security.gentoo.org/glsa/202105-20 Third Party Advisory
  • CVE Modified by [email protected]

    May. 26, 2021

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202105-20 [No Types Assigned]
  • Modified Analysis by [email protected]

    May. 04, 2021

    Action Type Old Value New Value
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1939368 Exploit, Issue Tracking, Patch https://bugzilla.redhat.com/show_bug.cgi?id=1939368 Exploit, Issue Tracking, Patch, Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/ Third Party Advisory
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/ Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* *cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 24, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/ [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 24, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/ [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 23, 2021

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Apr. 20, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1939368 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1939368 Exploit, Issue Tracking, Patch
    Added CWE NIST NVD-CWE-Other
    Added CPE Configuration OR *cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:* versions up to (excluding) 2.85
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-3448 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-3448 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.19 }} -0.03%

score

0.56475

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: