Bug 1183709 - (CVE-2021-3448) VUL-1: CVE-2021-3448: dnsmasq: fixed outgoing port used when --server is used with an interface name
(CVE-2021-3448)
VUL-1: CVE-2021-3448: dnsmasq: fixed outgoing port used when --server is used...
Status: IN_PROGRESS
Classification: Novell Products
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents
unspecified
Other Other
: P3 - Medium : Normal
: ---
Assigned To: Security Team bot
Security Team bot
https://smash.suse.de/issue/279926/
CVSSv3.1:SUSE:CVE-2021-3448:4.0:(AV:N...
:
Depends on:
Blocks:
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Reported: 2021-03-18 12:41 UTC by Robert Frohl
Modified: 2022-07-08 12:24 UTC (History)
5 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---


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Description Robert Frohl 2021-03-18 12:41:03 UTC
rh#1939368

When configured with --server=<address>@<interface> or similar (e.g. through dbus), dnsmasq configures a fixed UDP port for all outgoing queries to the specified upstream DNS server. If an attacker is able to discover the opened port through other means (e.g. port scanning, guessing or sniffing), he would just have to guess the random transmission ID to forge a reply and get it accepted by dnsmasq. This flaw could be abused to perform a DNS Cache Poisoning attack.

References:
https://bugzilla.redhat.com/show_bug.cgi?id=1939368
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-3448
https://access.redhat.com/security/cve/CVE-2021-3448
Comment 1 Gianluca Gabrielli 2021-06-11 13:38:44 UTC
Affected packages:
 - SUSE:SLE-11-SP3:Update/dnsmasq  2.78
 - SUSE:SLE-11-SP4:Update/dnsmasq  2.78
 - SUSE:SLE-12-SP1:Update/dnsmasq  2.78
 - SUSE:SLE-15-SP1:Update/dnsmasq  2.78
 - SUSE:SLE-15:Update/dnsmasq      2.78

Upstream patch [0].

[0] https://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff_plain;h=74d4fcd756a85bc1823232ea74334f7ccfb9d5d2;hp=4c30e9602bcf272863abb6f25b04ad035ab1a27b
Comment 4 Swamp Workflow Management 2021-10-27 13:31:45 UTC
openSUSE-SU-2021:3530-1: An update that solves two vulnerabilities, contains one feature and has one errata is now available.

Category: security (moderate)
Bug References: 1173646,1180914,1183709
CVE References: CVE-2020-14312,CVE-2021-3448
JIRA References: SLE-17936
Sources used:
openSUSE Leap 15.3 (src):    dnsmasq-2.86-7.14.1
Comment 5 Swamp Workflow Management 2021-10-27 13:37:21 UTC
SUSE-SU-2021:3530-1: An update that solves two vulnerabilities, contains one feature and has one errata is now available.

Category: security (moderate)
Bug References: 1173646,1180914,1183709
CVE References: CVE-2020-14312,CVE-2021-3448
JIRA References: SLE-17936
Sources used:
SUSE MicroOS 5.1 (src):    dnsmasq-2.86-7.14.1
SUSE MicroOS 5.0 (src):    dnsmasq-2.86-7.14.1
SUSE Linux Enterprise Server for SAP 15-SP1 (src):    dnsmasq-2.86-7.14.1
SUSE Linux Enterprise Server 15-SP1-LTSS (src):    dnsmasq-2.86-7.14.1
SUSE Linux Enterprise Server 15-SP1-BCL (src):    dnsmasq-2.86-7.14.1
SUSE Linux Enterprise Module for Basesystem 15-SP3 (src):    dnsmasq-2.86-7.14.1
SUSE Linux Enterprise Module for Basesystem 15-SP2 (src):    dnsmasq-2.86-7.14.1
SUSE Linux Enterprise High Performance Computing 15-SP1-LTSS (src):    dnsmasq-2.86-7.14.1
SUSE Linux Enterprise High Performance Computing 15-SP1-ESPOS (src):    dnsmasq-2.86-7.14.1
SUSE Enterprise Storage 6 (src):    dnsmasq-2.86-7.14.1
SUSE CaaS Platform 4.0 (src):    dnsmasq-2.86-7.14.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 6 Swamp Workflow Management 2021-10-31 20:50:20 UTC
openSUSE-SU-2021:1426-1: An update that solves two vulnerabilities, contains one feature and has one errata is now available.

Category: security (moderate)
Bug References: 1173646,1180914,1183709
CVE References: CVE-2020-14312,CVE-2021-3448
JIRA References: SLE-17936
Sources used:
openSUSE Leap 15.2 (src):    dnsmasq-2.86-lp152.7.6.1
Comment 16 Swamp Workflow Management 2022-04-21 16:19:20 UTC
SUSE-SU-2022:14940-1: An update that solves two vulnerabilities and has one errata is now available.

Category: security (important)
Bug References: 1138743,1183709,1197872
CVE References: CVE-2021-3448,CVE-2022-0934
JIRA References: 
Sources used:
SUSE Linux Enterprise Point of Sale 11-SP3 (src):    dnsmasq-2.78-0.16.17.1
SUSE Linux Enterprise Debuginfo 11-SP3 (src):    dnsmasq-2.78-0.16.17.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 17 Swamp Workflow Management 2022-04-21 16:20:12 UTC
SUSE-SU-2022:1289-1: An update that fixes two vulnerabilities is now available.

Category: security (important)
Bug References: 1183709,1197872
CVE References: CVE-2021-3448,CVE-2022-0934
JIRA References: 
Sources used:
SUSE OpenStack Cloud Crowbar 9 (src):    dnsmasq-2.78-18.18.1
SUSE OpenStack Cloud Crowbar 8 (src):    dnsmasq-2.78-18.18.1
SUSE OpenStack Cloud 9 (src):    dnsmasq-2.78-18.18.1
SUSE OpenStack Cloud 8 (src):    dnsmasq-2.78-18.18.1
SUSE Linux Enterprise Server for SAP 12-SP4 (src):    dnsmasq-2.78-18.18.1
SUSE Linux Enterprise Server for SAP 12-SP3 (src):    dnsmasq-2.78-18.18.1
SUSE Linux Enterprise Server 12-SP5 (src):    dnsmasq-2.78-18.18.1
SUSE Linux Enterprise Server 12-SP4-LTSS (src):    dnsmasq-2.78-18.18.1
SUSE Linux Enterprise Server 12-SP3-LTSS (src):    dnsmasq-2.78-18.18.1
SUSE Linux Enterprise Server 12-SP3-BCL (src):    dnsmasq-2.78-18.18.1
SUSE Linux Enterprise Server 12-SP2-BCL (src):    dnsmasq-2.78-18.18.1
HPE Helion Openstack 8 (src):    dnsmasq-2.78-18.18.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 18 Swamp Workflow Management 2022-04-21 16:22:09 UTC
SUSE-SU-2022:14941-1: An update that fixes two vulnerabilities is now available.

Category: security (important)
Bug References: 1183709,1197872
CVE References: CVE-2021-3448,CVE-2022-0934
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 11-SP4-LTSS (src):    dnsmasq-2.78-0.17.18.1
SUSE Linux Enterprise Debuginfo 11-SP4 (src):    dnsmasq-2.78-0.17.18.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.
Comment 19 Swamp Workflow Management 2022-04-21 16:22:52 UTC
SUSE-SU-2022:1288-1: An update that fixes two vulnerabilities is now available.

Category: security (important)
Bug References: 1183709,1197872
CVE References: CVE-2021-3448,CVE-2022-0934
JIRA References: 
Sources used:
SUSE Linux Enterprise Server for SAP 15 (src):    dnsmasq-2.78-150000.3.14.1
SUSE Linux Enterprise Server 15-LTSS (src):    dnsmasq-2.78-150000.3.14.1
SUSE Linux Enterprise High Performance Computing 15-LTSS (src):    dnsmasq-2.78-150000.3.14.1
SUSE Linux Enterprise High Performance Computing 15-ESPOS (src):    dnsmasq-2.78-150000.3.14.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.