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CVE-2017-14496

Published: Oct 2, 2017Updated: May 13, 2026 Sources: CVE List NVD BDU csafCWE-191
NVD MITRE
7.5CVSSHIGH
EPSS Score
66.3%
Top 0.8%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available

Description

Integer underflow in the add_pseudoheader function in dnsmasq before 2.78 , when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service via a crafted DNS request.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-191

Affected Products

DnsmasqSimon Kelley
On-prem
Networking Infrastructure / dns-dhcp-ntp
n/an/a
ubuntu linuxcanonical
On-premOS
Operating Systems / linux-distro
debian linuxdebian
On-premOS
Operating Systems / linux-distro
androidgoogle
EmbeddedOS
Operating Systems / mobile-os
simon kelleyindividual-devNetworking Infrastructure
canonicalcommercialGBOperating Systemsaka canonical ltd.
debianoss-projectGBOperating Systemsaka debian gnu/linux
googlecommercialUSMobile Appsaka google inc, google llc
and 5 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html
lists.opensuse.org
http://thekelleys.org.uk/dnsmasq/CHANGELOG
thekelleys.org.uk
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=897c113fda0886a28a986cc6ba17bb93bd6cb1c7
thekelleys.org.uk
and 44 more references View all →

Timeline

Published
Oct 2, 2017
Last Updated
May 13, 2026

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