CVE-2017-14496

Dnsmasq < 2.78 - Integer Underflow

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Un desbordamiento inferior de enteros en las versiones anteriores a la 2.78 de dnsmasq, cuando están especificadas las opciones --add-mac, --add-cpe-id o --add-subnet, permite que los atacantes remotos provoquen una denegación de servicio mediante una petición DNS manipulada.

An integer underflow flaw leading to a buffer over-read was found in dnsmasq in the EDNS0 code. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash. This issue only affected configurations using one of the options: add-mac, add-cpe-id, or add-subnet.

Dnsmasq versions prior to 2.78 suffer from an integer underflow vulnerability.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-09-15 CVE Reserved
2017-10-02 CVE Published
2024-01-06 EPSS Updated
2024-08-05 CVE Updated
2024-08-05 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-125: Out-of-bounds Read
CWE-191: Integer Underflow (Wrap or Wraparound)

CAPEC

References (24)

URL	Tag	Source
http://nvidia.custhelp.com/app/answers/detail/a_id/4561	X_refsource_confirm
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=897c113fda0886a28a986cc6ba17bb93bd6cb1c7	X_refsource_confirm
http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt	X_refsource_confirm
http://www.securityfocus.com/bid/101085	Third Party Advisory
http://www.securityfocus.com/bid/101977	Vdb Entry
http://www.securitytracker.com/id/1039474	Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf	X_refsource_confirm
https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html	Third Party Advisory
https://source.android.com/security/bulletin/2017-10-01	Third Party Advisory
https://www.kb.cert.org/vuls/id/973527	Third Party Advisory
https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html	Mailing List
https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html	Mailing List
https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq	X_refsource_confirm

URL	Date	SRC
https://www.exploit-db.com/exploits/42946	2024-08-05

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2017:2836	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html	2023-11-07
http://thekelleys.org.uk/dnsmasq/CHANGELOG	2023-11-07
http://www.debian.org/security/2017/dsa-3989	2023-11-07
http://www.ubuntu.com/usn/USN-3430-1	2023-11-07
http://www.ubuntu.com/usn/USN-3430-2	2023-11-07
https://access.redhat.com/security/vulnerabilities/3199382	2017-10-02
https://security.gentoo.org/glsa/201710-27	2023-11-07
https://access.redhat.com/security/cve/CVE-2017-14496	2017-10-02
https://bugzilla.redhat.com/show_bug.cgi?id=1495416	2017-10-02

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				17.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "17.04"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				7.1 Search vendor "Debian" for product "Debian Linux" and version "7.1"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				4.4.4 Search vendor "Google" for product "Android" and version "4.4.4"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				5.0.2 Search vendor "Google" for product "Android" and version "5.0.2"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				5.1.1 Search vendor "Google" for product "Android" and version "5.1.1"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				6.0 Search vendor "Google" for product "Android" and version "6.0"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				6.0.1 Search vendor "Google" for product "Android" and version "6.0.1"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				7.0 Search vendor "Google" for product "Android" and version "7.0"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				7.1.1 Search vendor "Google" for product "Android" and version "7.1.1"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				7.1.2 Search vendor "Google" for product "Android" and version "7.1.2"		-		Affected
Google Search vendor "Google"		Android Search vendor "Google" for product "Android"				8.0 Search vendor "Google" for product "Android" and version "8.0"		-		Affected
Novell Search vendor "Novell"		Leap Search vendor "Novell" for product "Leap"				42.2 Search vendor "Novell" for product "Leap" and version "42.2"		-		Affected
Novell Search vendor "Novell"		Leap Search vendor "Novell" for product "Leap"				42.3 Search vendor "Novell" for product "Leap" and version "42.3"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop"				7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server"				7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0"		-		Affected
Redhat Search vendor "Redhat"		Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation"				7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0"		-		Affected
Thekelleys Search vendor "Thekelleys"		Dnsmasq Search vendor "Thekelleys" for product "Dnsmasq"				<= 2.77 Search vendor "Thekelleys" for product "Dnsmasq" and version " <= 2.77"		-		Affected