ID CVE-2017-14493
Summary Stack-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DHCPv6 request.
References
Vulnerable Configurations
  • Canonical Ubuntu Linux 14.04 LTS (Long-Term Support)
    cpe:2.3:o:canonical:ubuntu_linux:14.04:-:-:-:lts
  • Canonical Ubuntu Linux 16.04 LTS (Long-Term Support)
    cpe:2.3:o:canonical:ubuntu_linux:16.04:-:-:-:lts
  • Canonical Ubuntu Linux 17.04
    cpe:2.3:o:canonical:ubuntu_linux:17.04
  • Debian Linux 7.0
    cpe:2.3:o:debian:debian_linux:7.0
  • Debian Linux 7.1
    cpe:2.3:o:debian:debian_linux:7.1
  • Debian Linux 9.0
    cpe:2.3:o:debian:debian_linux:9.0
  • openSUSE Leap 42.2
    cpe:2.3:o:opensuse:leap:42.2
  • openSUSE Leap 42.3
    cpe:2.3:o:opensuse:leap:42.3
  • RedHat Enterprise Linux Desktop 7.0
    cpe:2.3:o:redhat:enterprise_linux_desktop:7.0
  • RedHat Enterprise Linux Server 7.0
    cpe:2.3:o:redhat:enterprise_linux_server:7.0
  • RedHat Enterprise Linux Workstation 7.0
    cpe:2.3:o:redhat:enterprise_linux_workstation:7.0
  • cpe:2.3:a:thekelleys:dnsmasq:2.77
    cpe:2.3:a:thekelleys:dnsmasq:2.77
CVSS
Base: 7.5
Impact:
Exploitability:
CWE CWE-119
CAPEC
  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
  • Overflow Binary Resource File
    An attack of this type exploits a buffer overflow vulnerability in the handling of binary resources. Binary resources may include music files like MP3, image files like JPEG files, and any other binary file. These attacks may pass unnoticed to the client machine through normal usage of files, such as a browser loading a seemingly innocent JPEG file. This can allow the attacker access to the execution stack and execute arbitrary code in the target process. This attack pattern is a variant of standard buffer overflow attacks using an unexpected vector (binary files) to wrap its attack and open up a new attack vector. The attacker is required to either directly serve the binary content to the victim, or place it in a locale like a MP3 sharing application, for the victim to download. The attacker then is notified upon the download or otherwise locates the vulnerability opened up by the buffer overflow.
  • Buffer Overflow via Symbolic Links
    This type of attack leverages the use of symbolic links to cause buffer overflows. An attacker can try to create or manipulate a symbolic link file such that its contents result in out of bounds data. When the target software processes the symbolic link file, it could potentially overflow internal buffers with insufficient bounds checking.
  • Overflow Variables and Tags
    This type of attack leverages the use of tags or variables from a formatted configuration data to cause buffer overflow. The attacker crafts a malicious HTML page or configuration file that includes oversized strings, thus causing an overflow.
  • Buffer Overflow via Parameter Expansion
    In this attack, the target software is given input that the attacker knows will be modified and expanded in size during processing. This attack relies on the target software failing to anticipate that the expanded data may exceed some internal limit, thereby creating a buffer overflow.
  • Buffer Overflow in an API Call
    This attack targets libraries or shared code modules which are vulnerable to buffer overflow attacks. An attacker who has access to an API may try to embed malicious code in the API function call and exploit a buffer overflow vulnerability in the function's implementation. All clients that make use of the code library thus become vulnerable by association. This has a very broad effect on security across a system, usually affecting more than one software process.
  • Buffer Overflow in Local Command-Line Utilities
    This attack targets command-line utilities available in a number of shells. An attacker can leverage a vulnerability found in a command-line utility to escalate privilege to root.
exploit-db via4
description Dnsmasq < 2.78 - Stack-Based Overflow. CVE-2017-14493. Dos exploit for Multiple platform
file exploits/multiple/dos/42943.py
id EDB-ID:42943
last seen 2017-10-02
modified 2017-10-02
platform multiple
port
published 2017-10-02
reporter Exploit-DB
source https://www.exploit-db.com/download/42943/
title Dnsmasq < 2.78 - Stack-Based Overflow
type dos
nessus via4
  • NASL family Scientific Linux Local Security Checks
    NASL id SL_20171002_DNSMASQ_ON_SL7_X.NASL
    description Security Fix(es) : - A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491) - A heap buffer overflow was discovered in dnsmasq in the IPv6 router advertisement (RA) handling code. An attacker on the local network segment could send crafted RAs to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. This issue only affected configurations using one of these options: enable-ra, ra-only, slaac, ra- names, ra-advrouter, or ra-stateless. (CVE-2017-14492) - A stack-based buffer overflow was found in dnsmasq in the DHCPv6 code. An attacker on the local network could send a crafted DHCPv6 request to dnsmasq which would cause it to a crash or, potentially, execute arbitrary code. (CVE-2017-14493) - An information leak was found in dnsmasq in the DHCPv6 relay code. An attacker on the local network could send crafted DHCPv6 packets to dnsmasq causing it to forward the contents of process memory, potentially leaking sensitive data. (CVE-2017-14494) - A memory exhaustion flaw was found in dnsmasq in the EDNS0 code. An attacker could send crafted DNS packets which would trigger memory allocations which would never be freed, leading to unbounded memory consumption and eventually a crash. This issue only affected configurations using one of the options: add-mac, add-cpe-id, or add- subnet. (CVE-2017-14495) - 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. (CVE-2017-14496)
    last seen 2018-09-02
    modified 2018-01-29
    plugin id 103635
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103635
    title Scientific Linux Security Update : dnsmasq on SL7.x x86_64
  • NASL family Gentoo Local Security Checks
    NASL id GENTOO_GLSA-201710-27.NASL
    description The remote host is affected by the vulnerability described in GLSA-201710-27 (Dnsmasq: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Dnsmasq. Please review the references below for details. Impact : A remote attacker could execute arbitrary code or cause a Denial of Service condition via crafted DNS, IPv6, or DHCPv6 packets. Workaround : There is no known workaround at this time.
    last seen 2018-09-01
    modified 2018-01-29
    plugin id 104070
    published 2017-10-23
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104070
    title GLSA-201710-27 : Dnsmasq: Multiple vulnerabilities
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2017-515264AE24.NASL
    description CVE-2017-14491 CVE-2017-14492 CVE-2017-14493 CVE-2017-14494 CVE-2017-14495 CVE-2017-14496 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-09-01
    modified 2018-02-02
    plugin id 104110
    published 2017-10-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=104110
    title Fedora 25 : dnsmasq (2017-515264ae24)
  • NASL family Slackware Local Security Checks
    NASL id SLACKWARE_SSA_2017-275-01.NASL
    description New dnsmasq packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, 14.2, and -current to fix security issues.
    last seen 2018-09-01
    modified 2018-01-29
    plugin id 103599
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103599
    title Slackware 13.0 / 13.1 / 13.37 / 14.0 / 14.1 / 14.2 / current : dnsmasq (SSA:2017-275-01)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2017-7106A157F5.NASL
    description CVE-2017-14491 CVE-2017-14492 CVE-2017-14493 CVE-2017-14494 CVE-2017-14495 CVE-2017-14496 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-09-01
    modified 2018-02-02
    plugin id 105901
    published 2018-01-15
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=105901
    title Fedora 27 : dnsmasq (2017-7106a157f5)
  • NASL family Firewalls
    NASL id PFSENSE_2_3_5.NASL
    description According to its self-reported version number, the remote pfSense install is affected by multiple vulnerabilities as stated in the referenced vendor advisories.
    last seen 2018-09-19
    modified 2018-09-17
    plugin id 109037
    published 2018-04-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=109037
    title pfSense < 2.3.5 Multiple Vulnerabilities (KRACK)
  • NASL family SuSE Local Security Checks
    NASL id OPENSUSE-2017-1116.NASL
    description This update for dnsmasq fixes the following security issues : - CVE-2017-14491: 2 byte heap based overflow. [bsc#1060354] - CVE-2017-14492: heap based overflow. [bsc#1060355] - CVE-2017-14493: stack based overflow. [bsc#1060360] - CVE-2017-14494: DHCP - info leak. [bsc#1060361] - CVE-2017-14495: DNS - OOM DoS. [bsc#1060362] - CVE-2017-14496: DNS - DoS Integer underflow. [bsc#1060364] This update was imported from the SUSE:SLE-12-SP1:Update update project.
    last seen 2018-09-02
    modified 2018-01-29
    plugin id 103623
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103623
    title openSUSE Security Update : dnsmasq (openSUSE-2017-1116)
  • NASL family Amazon Linux Local Security Checks
    NASL id ALA_ALAS-2017-907.NASL
    description Information leak in the DHCPv6 relay code An information leak was found in dnsmasq in the DHCPv6 relay code. An attacker on the local network could send crafted DHCPv6 packets to dnsmasq causing it to forward the contents of process memory, potentially leaking sensitive data. (CVE-2017-14494) Memory exhaustion vulnerability in the EDNS0 code A memory exhaustion flaw was found in dnsmasq in the EDNS0 code. An attacker could send crafted DNS packets which would trigger memory allocations which would never be freed, leading to unbounded memory consumption and eventually a crash. This issue only affected configurations using one of the options: add-mac, add-cpe-id, or add-subnet. (CVE-2017-14495) Integer underflow leading to buffer over-read in the EDNS0 code 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. (CVE-2017-14496) Heap overflow in the code responsible for building DNS replies A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491) Heap overflow in the IPv6 router advertisement code A heap buffer overflow was discovered in dnsmasq in the IPv6 router advertisement (RA) handling code. An attacker on the local network segment could send crafted RAs to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. This issue only affected configurations using one of these options: enable-ra, ra-only, slaac, ra-names, ra-advrouter, or ra-stateless. (CVE-2017-14492) Stack buffer overflow in the DHCPv6 code A stack buffer overflow was found in dnsmasq in the DHCPv6 code. An attacker on the local network could send a crafted DHCPv6 request to dnsmasq which would cause it to a crash or, potentially, execute arbitrary code. (CVE-2017-14493)
    last seen 2018-09-01
    modified 2018-04-19
    plugin id 103604
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103604
    title Amazon Linux AMI : dnsmasq (ALAS-2017-907)
  • NASL family FreeBSD Local Security Checks
    NASL id FREEBSD_PKG_B77B5646A77811E7AC58B499BAEBFEAF.NASL
    description Google Project Zero reports : - CVE-2017-14491: Heap based overflow (2 bytes). Before 2.76 and this commit overflow was unrestricted. - CVE-2017-14492: Heap based overflow. - CVE-2017-14493: Stack Based overflow. - CVE-2017-14494: Information Leak - CVE-2017-14495: Lack of free() - CVE-2017-14496: Invalid boundary checks. Integer underflow leading to a huge memcpy. - CVE-2017-13704: Crash on large DNS query
    last seen 2018-11-13
    modified 2018-11-10
    plugin id 103620
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103620
    title FreeBSD : dnsmasq -- multiple vulnerabilities (b77b5646-a778-11e7-ac58-b499baebfeaf)
  • NASL family PhotonOS Local Security Checks
    NASL id PHOTONOS_PHSA-2017-0035.NASL
    description An update of [dnsmasq] packages for PhotonOS has been released.
    last seen 2018-09-01
    modified 2018-08-17
    plugin id 111884
    published 2018-08-17
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=111884
    title Photon OS 1.0: Dnsmasq PHSA-2017-0035
  • NASL family Huawei Local Security Checks
    NASL id EULEROS_SA-2017-1239.NASL
    description According to the versions of the dnsmasq package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491) - A heap buffer overflow was discovered in dnsmasq in the IPv6 router advertisement (RA) handling code. An attacker on the local network segment could send crafted RAs to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. This issue only affected configurations using one of these options: enable-ra, ra-only, slaac, ra-names, ra-advrouter, or ra-stateless. (CVE-2017-14492) - A stack buffer overflow was found in dnsmasq in the DHCPv6 code. An attacker on the local network could send a crafted DHCPv6 request to dnsmasq which would cause it to a crash or, potentially, execute arbitrary code. (CVE-2017-14493) - An information leak was found in dnsmasq in the DHCPv6 relay code. An attacker on the local network could send crafted DHCPv6 packets to dnsmasq causing it to forward the contents of process memory, potentially leaking sensitive data. (CVE-2017-14494) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-11-15
    modified 2018-11-14
    plugin id 103820
    published 2017-10-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103820
    title EulerOS 2.0 SP1 : dnsmasq (EulerOS-SA-2017-1239)
  • NASL family Debian Local Security Checks
    NASL id DEBIAN_DSA-3989.NASL
    description Felix Wilhelm, Fermin J. Serna, Gabriel Campana, Kevin Hamacher, Ron Bowes and Gynvael Coldwind of the Google Security Team discovered several vulnerabilities in dnsmasq, a small caching DNS proxy and DHCP/TFTP server, which may result in denial of service, information leak or the execution of arbitrary code.
    last seen 2018-11-13
    modified 2018-11-10
    plugin id 103608
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103608
    title Debian DSA-3989-1 : dnsmasq - security update
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2017-2837.NASL
    description An update for dnsmasq is now available for Red Hat Enterprise Linux 7.2 Extended Update Support and Red Hat Enterprise Linux 7.3 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server. Security Fix(es) : * A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491) * A heap buffer overflow was discovered in dnsmasq in the IPv6 router advertisement (RA) handling code. An attacker on the local network segment could send crafted RAs to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. This issue only affected configurations using one of these options: enable-ra, ra-only, slaac, ra-names, ra-advrouter, or ra-stateless. (CVE-2017-14492) * A stack-based buffer overflow was found in dnsmasq in the DHCPv6 code. An attacker on the local network could send a crafted DHCPv6 request to dnsmasq which would cause it to a crash or, potentially, execute arbitrary code. (CVE-2017-14493) * An information leak was found in dnsmasq in the DHCPv6 relay code. An attacker on the local network could send crafted DHCPv6 packets to dnsmasq causing it to forward the contents of process memory, potentially leaking sensitive data. (CVE-2017-14494) Red Hat would like to thank Felix Wilhelm (Google Security Team), Fermin J. Serna (Google Security Team), Gabriel Campana (Google Security Team), Kevin Hamacher (Google Security Team), and Ron Bowes (Google Security Team) for reporting these issues.
    last seen 2018-11-13
    modified 2018-11-10
    plugin id 103629
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103629
    title RHEL 7 : dnsmasq (RHSA-2017:2837)
  • NASL family Fedora Local Security Checks
    NASL id FEDORA_2017-24F067299E.NASL
    description CVE-2017-14491 CVE-2017-14492 CVE-2017-14493 CVE-2017-14494 CVE-2017-14495 CVE-2017-14496 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-09-01
    modified 2018-02-02
    plugin id 103888
    published 2017-10-18
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103888
    title Fedora 26 : dnsmasq (2017-24f067299e)
  • NASL family Huawei Local Security Checks
    NASL id EULEROS_SA-2017-1240.NASL
    description According to the versions of the dnsmasq packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : - A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491) - A heap buffer overflow was discovered in dnsmasq in the IPv6 router advertisement (RA) handling code. An attacker on the local network segment could send crafted RAs to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. This issue only affected configurations using one of these options: enable-ra, ra-only, slaac, ra-names, ra-advrouter, or ra-stateless. (CVE-2017-14492) - A stack buffer overflow was found in dnsmasq in the DHCPv6 code. An attacker on the local network could send a crafted DHCPv6 request to dnsmasq which would cause it to a crash or, potentially, execute arbitrary code. (CVE-2017-14493) - An information leak was found in dnsmasq in the DHCPv6 relay code. An attacker on the local network could send crafted DHCPv6 packets to dnsmasq causing it to forward the contents of process memory, potentially leaking sensitive data. (CVE-2017-14494) Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-11-15
    modified 2018-11-14
    plugin id 103821
    published 2017-10-13
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103821
    title EulerOS 2.0 SP2 : dnsmasq (EulerOS-SA-2017-1240)
  • NASL family CentOS Local Security Checks
    NASL id CENTOS_RHSA-2017-2836.NASL
    description An update for dnsmasq is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server. Security Fix(es) : * A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491) * A heap buffer overflow was discovered in dnsmasq in the IPv6 router advertisement (RA) handling code. An attacker on the local network segment could send crafted RAs to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. This issue only affected configurations using one of these options: enable-ra, ra-only, slaac, ra-names, ra-advrouter, or ra-stateless. (CVE-2017-14492) * A stack-based buffer overflow was found in dnsmasq in the DHCPv6 code. An attacker on the local network could send a crafted DHCPv6 request to dnsmasq which would cause it to a crash or, potentially, execute arbitrary code. (CVE-2017-14493) * An information leak was found in dnsmasq in the DHCPv6 relay code. An attacker on the local network could send crafted DHCPv6 packets to dnsmasq causing it to forward the contents of process memory, potentially leaking sensitive data. (CVE-2017-14494) * A memory exhaustion flaw was found in dnsmasq in the EDNS0 code. An attacker could send crafted DNS packets which would trigger memory allocations which would never be freed, leading to unbounded memory consumption and eventually a crash. This issue only affected configurations using one of the options: add-mac, add-cpe-id, or add-subnet. (CVE-2017-14495) * 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. (CVE-2017-14496) Red Hat would like to thank Felix Wilhelm (Google Security Team), Fermin J. Serna (Google Security Team), Gabriel Campana (Google Security Team), Kevin Hamacher (Google Security Team), and Ron Bowes (Google Security Team) for reporting these issues.
    last seen 2018-11-11
    modified 2018-11-10
    plugin id 103605
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103605
    title CentOS 7 : dnsmasq (CESA-2017:2836)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-2617-1.NASL
    description This update for dnsmasq fixes the following security issues : - CVE-2017-14491: 2 byte heap based overflow. [bsc#1060354] - CVE-2017-14492: heap based overflow. [bsc#1060355] - CVE-2017-14493: stack based overflow. [bsc#1060360] - CVE-2017-14494: DHCP - info leak. [bsc#1060361] - CVE-2017-14495: DNS - OOM DoS. [bsc#1060362] - CVE-2017-14496: DNS - DoS Integer underflow. [bsc#1060364] This update brings a (small) potential incompatibility in the handling of 'basename' in --pxe-service. Please read the CHANGELOG and the documentation if you are using this option. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-12-02
    modified 2018-11-30
    plugin id 103638
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103638
    title SUSE SLES11 Security Update : dnsmasq (SUSE-SU-2017:2617-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-2619-1.NASL
    description This update for dnsmasq fixes the following security issues : - CVE-2017-14491: 2 byte heap based overflow. [bsc#1060354] - CVE-2017-14492: heap based overflow. [bsc#1060355] - CVE-2017-14493: stack based overflow. [bsc#1060360] - CVE-2017-14494: DHCP - info leak. [bsc#1060361] - CVE-2017-14495: DNS - OOM DoS. [bsc#1060362] - CVE-2017-14496: DNS - DoS Integer underflow. [bsc#1060364] This update brings a (small) potential incompatibility in the handling of 'basename' in --pxe-service. Please read the CHANGELOG and the documentation if you are using this option. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-12-02
    modified 2018-11-30
    plugin id 103640
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103640
    title SUSE SLES11 Security Update : dnsmasq (SUSE-SU-2017:2619-1)
  • NASL family Oracle Linux Local Security Checks
    NASL id ORACLELINUX_ELSA-2017-2836.NASL
    description From Red Hat Security Advisory 2017:2836 : An update for dnsmasq is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server. Security Fix(es) : * A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491) * A heap buffer overflow was discovered in dnsmasq in the IPv6 router advertisement (RA) handling code. An attacker on the local network segment could send crafted RAs to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. This issue only affected configurations using one of these options: enable-ra, ra-only, slaac, ra-names, ra-advrouter, or ra-stateless. (CVE-2017-14492) * A stack-based buffer overflow was found in dnsmasq in the DHCPv6 code. An attacker on the local network could send a crafted DHCPv6 request to dnsmasq which would cause it to a crash or, potentially, execute arbitrary code. (CVE-2017-14493) * An information leak was found in dnsmasq in the DHCPv6 relay code. An attacker on the local network could send crafted DHCPv6 packets to dnsmasq causing it to forward the contents of process memory, potentially leaking sensitive data. (CVE-2017-14494) * A memory exhaustion flaw was found in dnsmasq in the EDNS0 code. An attacker could send crafted DNS packets which would trigger memory allocations which would never be freed, leading to unbounded memory consumption and eventually a crash. This issue only affected configurations using one of the options: add-mac, add-cpe-id, or add-subnet. (CVE-2017-14495) * 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. (CVE-2017-14496) Red Hat would like to thank Felix Wilhelm (Google Security Team), Fermin J. Serna (Google Security Team), Gabriel Campana (Google Security Team), Kevin Hamacher (Google Security Team), and Ron Bowes (Google Security Team) for reporting these issues.
    last seen 2018-09-01
    modified 2018-07-24
    plugin id 103625
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103625
    title Oracle Linux 7 : dnsmasq (ELSA-2017-2836)
  • NASL family Red Hat Local Security Checks
    NASL id REDHAT-RHSA-2017-2836.NASL
    description An update for dnsmasq is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Critical. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. The dnsmasq packages contain Dnsmasq, a lightweight DNS (Domain Name Server) forwarder and DHCP (Dynamic Host Configuration Protocol) server. Security Fix(es) : * A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. (CVE-2017-14491) * A heap buffer overflow was discovered in dnsmasq in the IPv6 router advertisement (RA) handling code. An attacker on the local network segment could send crafted RAs to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. This issue only affected configurations using one of these options: enable-ra, ra-only, slaac, ra-names, ra-advrouter, or ra-stateless. (CVE-2017-14492) * A stack-based buffer overflow was found in dnsmasq in the DHCPv6 code. An attacker on the local network could send a crafted DHCPv6 request to dnsmasq which would cause it to a crash or, potentially, execute arbitrary code. (CVE-2017-14493) * An information leak was found in dnsmasq in the DHCPv6 relay code. An attacker on the local network could send crafted DHCPv6 packets to dnsmasq causing it to forward the contents of process memory, potentially leaking sensitive data. (CVE-2017-14494) * A memory exhaustion flaw was found in dnsmasq in the EDNS0 code. An attacker could send crafted DNS packets which would trigger memory allocations which would never be freed, leading to unbounded memory consumption and eventually a crash. This issue only affected configurations using one of the options: add-mac, add-cpe-id, or add-subnet. (CVE-2017-14495) * 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. (CVE-2017-14496) Red Hat would like to thank Felix Wilhelm (Google Security Team), Fermin J. Serna (Google Security Team), Gabriel Campana (Google Security Team), Kevin Hamacher (Google Security Team), and Ron Bowes (Google Security Team) for reporting these issues.
    last seen 2018-11-13
    modified 2018-11-10
    plugin id 103628
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103628
    title RHEL 7 : dnsmasq (RHSA-2017:2836)
  • NASL family DNS
    NASL id DNSMASQ_2_78.NASL
    description The version of dnsmasq installed on the remote host is prior to 2.78, and thus, is affected by the following vulnerabilities : - Denial of service related to handling DNS queries exceeding 512 bytes. (CVE-2017-13704) - Heap overflow related to handling DNS requests. (CVE-2017-14491) - Heap overflow related to IPv6 router advertisement handling. (CVE-2017-14492) - Stack overflow related to DHCPv6 request handling. (CVE-2017-14493) - Memory disclosure related to DHCPv6 packet handling. (CVE-2017-14494) - Denial of service related to handling DNS queries. (CVE-2017-14495) - Denial of service related to handling DNS queries. (CVE-2017-14496)
    last seen 2018-09-01
    modified 2017-10-06
    plugin id 103647
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103647
    title dnsmasq < 2.78 Multiple Remote Vulnerabilities
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-2616-1.NASL
    description This update for dnsmasq fixes the following issues. Remedy the following security issues : - CVE-2017-14491: 2 byte heap based overflow. [bsc#1060354] - CVE-2017-14492: heap based overflow. [bsc#1060355] - CVE-2017-14493: stack based overflow. [bsc#1060360] - CVE-2017-14494: DHCP - info leak. [bsc#1060361] - CVE-2017-14495: DNS - OOM DoS. [bsc#1060362] - CVE-2017-14496: DNS - DoS Integer underflow. [bsc#1060364] - Prevent a man-in-the-middle attack (bsc#972164, fate#321175). Furthermore, the following issues have been fixed : - Fix DHCP relaying, broken in 2.76 and 2.77. - Update to version 2.78 (fate#321175, fate#322030, bsc#1035227). - Fix PXE booting for UEFI architectures (fate#322030). - Drop PrivateDevices=yes which breaks logging (bsc#902511, bsc#904537) - Build with support for DNSSEC (fate#318323, bsc#908137). Please note that this update brings a (small) potential incompatibility in the handling of 'basename' in --pxe-service. Please read the CHANGELOG and the documentation if you are using this option. Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-12-02
    modified 2018-11-30
    plugin id 103637
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103637
    title SUSE SLES12 Security Update : dnsmasq (SUSE-SU-2017:2616-1)
  • NASL family Ubuntu Local Security Checks
    NASL id UBUNTU_USN-3430-1.NASL
    description Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher discovered that Dnsmasq incorrectly handled DNS requests. A remote attacker could use this issue to cause Dnsmasq to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-14491) Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher discovered that Dnsmasq incorrectly handled IPv6 router advertisements. A remote attacker could use this issue to cause Dnsmasq to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-14492) Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher discovered that Dnsmasq incorrectly handled DHCPv6 requests. A remote attacker could use this issue to cause Dnsmasq to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-14493) Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher discovered that Dnsmasq incorrectly handled DHCPv6 packets. A remote attacker could use this issue to possibly obtain sensitive memory contents. (CVE-2017-14494) Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher discovered that Dnsmasq incorrectly handled DNS requests. A remote attacker could use this issue to cause Dnsmasq to consume memory, resulting in a denial of service. (CVE-2017-14495) Felix Wilhelm, Fermin J. Serna, Gabriel Campana and Kevin Hamacher discovered that Dnsmasq incorrectly handled DNS requests. A remote attacker could use this issue to cause Dnsmasq to crash, resulting in a denial of service. (CVE-2017-14496). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-12-02
    modified 2018-12-01
    plugin id 103641
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103641
    title Ubuntu 14.04 LTS / 16.04 LTS / 17.04 : dnsmasq vulnerabilities (USN-3430-1)
  • NASL family SuSE Local Security Checks
    NASL id SUSE_SU-2017-2618-1.NASL
    description This update for dnsmasq fixes the following security issues : - CVE-2017-14491: 2 byte heap based overflow. [bsc#1060354] - CVE-2017-14492: heap based overflow. [bsc#1060355] - CVE-2017-14493: stack based overflow. [bsc#1060360] - CVE-2017-14494: DHCP - info leak. [bsc#1060361] - CVE-2017-14495: DNS - OOM DoS. [bsc#1060362] - CVE-2017-14496: DNS - DoS Integer underflow. [bsc#1060364] Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen 2018-12-02
    modified 2018-11-30
    plugin id 103639
    published 2017-10-03
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=103639
    title SUSE SLED12 / SLES12 Security Update : dnsmasq (SUSE-SU-2017:2618-1)
packetstorm via4
data source https://packetstormsecurity.com/files/download/144473/dnsmasqsb-overflow.txt
id PACKETSTORM:144473
last seen 2017-10-03
published 2017-10-02
reporter Google Security Research
source https://packetstormsecurity.com/files/144473/Dnsmasq-Stack-Based-Overflow.html
title Dnsmasq Stack-Based Overflow
redhat via4
advisories
  • rhsa
    id RHSA-2017:2836
  • rhsa
    id RHSA-2017:2837
rpms
  • dnsmasq-0:2.76-2.el7_4.2
  • dnsmasq-utils-0:2.76-2.el7_4.2
refmap via4
bid 101085
cert-vn VU#973527
confirm
debian DSA-3989
gentoo GLSA-201710-27
misc https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
mlist
  • [dnsmasq-discuss] 20171002 Announce: dnsmasq-2.78.
  • [dnsmasq-discuss] 20171002 IMPORTANT SECURITY INFORMATION.
sectrack 1039474
suse openSUSE-SU-2017:2633
ubuntu
  • USN-3430-1
  • USN-3430-2
the hacker news via4
id THN:D2096A5FA799B07E97FD2767D8E6C641
last seen 2018-01-27
modified 2017-10-03
published 2017-10-02
reporter Mohit Kumar
source https://thehackernews.com/2017/10/dnsmasq-network-services.html
title Google Finds 7 Security Flaws in Widely Used Dnsmasq Network Software
Last major update 02-10-2017 - 21:29
Published 02-10-2017 - 21:29
Last modified 03-03-2018 - 21:29
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