Vulnerability-Lookup

SUSE-SU-2022:14941-1

Vulnerability from csaf_suse - Published: 2022-04-21 12:57 - Updated: 2022-04-21 12:57

Summary

Security update for dnsmasq

Severity

Important

Notes

Title of the patch: Security update for dnsmasq

Description of the patch: This update for dnsmasq fixes the following issues: - CVE-2021-3448: Fixed a potential DNS cache poisoning issue due to a constant outgoing port being used when for certain use cases of the --server option (bsc#1183709). - CVE-2022-0934: Fixed an invalid memory access that could lead to remote denial of service via crafted packet (bsc#1197872).

Patchnames: slessp4-dnsmasq-14941

CVE-2021-3448

4 (Medium)


                
                  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: SUSE Linux Enterprise Server 11 SP4-LTSS:dnsmasq-2.78-0.17.18.1.i586	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 11 SP4-LTSS:dnsmasq-2.78-0.17.18.1.ppc64	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 11 SP4-LTSS:dnsmasq-2.78-0.17.18.1.s390x	—	Vendor Fix
Unresolved product id: SUSE Linux Enterprise Server 11 SP4-LTSS:dnsmasq-2.78-0.17.18.1.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2022-0934

6.5 (Medium)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Affected products

Recommended 4 products, the same list as for CVE-2021-3448

Threats

Impact moderate

References

12 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/s…	self
https://www.suse.com/support/update/announcement/…	self
https://lists.suse.com/pipermail/sle-security-upd…	self
https://bugzilla.suse.com/1183709	self
https://bugzilla.suse.com/1197872	self
https://www.suse.com/security/cve/CVE-2021-3448/	self
https://www.suse.com/security/cve/CVE-2022-0934/	self
https://www.suse.com/security/cve/CVE-2021-3448	external
https://bugzilla.suse.com/1183709	external
https://www.suse.com/security/cve/CVE-2022-0934	external
https://bugzilla.suse.com/1197872	external

JSON

To clipboard

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  "vulnerabilities": [
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          "title": "CVE description"
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      ],
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          "date": "2022-04-21T12:57:08Z",
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}

CVE-2021-3448 (GCVE-0-2021-3448)

Vulnerability from cvelistv5 – Published: 2021-04-08 22:06 – Updated: 2025-12-03 00:40

Summary

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.

Severity

4 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-03 00:40 UTC

CWE

CWE-358

Assigner

redhat redhat root

References

6 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1939368	x_refsource_MISC
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://security.gentoo.org/glsa/202105-20	vendor-advisoryx_refsource_GENTOO
https://www.oracle.com/security-alerts/cpujan2022.html	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	dnsmasq	Affected: dnsmasq 2.85

Show details on NVD website

JSON

To clipboard

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CVE-2022-0934 (GCVE-0-2022-0934)

Vulnerability from cvelistv5 – Published: 2022-08-29 14:03 – Updated: 2025-11-03 21:45

Summary

A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-06-10 13:19 UTC

CWE

CWE-416 - - Use After Free

Assigner

redhat redhat root

References

5 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2057075	x_refsource_MISC
https://lists.thekelleys.org.uk/pipermail/dnsmasq…	x_refsource_MISC
https://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3…	x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2022-0934	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2024…

Impacted products

1 product

Vendor	Product	Version
n/a	dnsmasq	Affected: Not-Known

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

SUSE-SU-2022:14941-1

CVE-2021-3448 (GCVE-0-2021-3448)

CVE-2022-0934 (GCVE-0-2022-0934)

Tags

Sightings

Nomenclature

Related by attack behaviour