CVE-2017-14495
First published: Tue Sep 26 2017(Updated: )
Memory leak 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 (memory consumption) via vectors involving DNS response creation.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/dnsmasq | 2.80-1+deb10u1 2.85-1 2.89-1 | |
| redhat/dnsmasq | <2.78 | 2.78 |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =17.04 | |
| Debian | =7.0 | |
| Debian | =7.1 | |
| Debian | =9.0 | |
| openSUSE | =42.2 | |
| openSUSE | =42.3 | |
| Red Hat Enterprise Linux Desktop | =7.0 | |
| Red Hat Enterprise Linux Server | =7.0 | |
| Red Hat Enterprise Linux Workstation | =7.0 | |
| Dnsmasq | <=2.77 |
Remedy
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=51eadb692a5123b9838e5a68ecace3ac579a3a45
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Reference Links
- https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=51eadb692a5123b9838e5a68ecace3ac579a3a45
- https://security-tracker.debian.org/tracker/CVE-2017-14495
- https://access.redhat.com/security/cve/CVE-2017-14495
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1330994&action=diff
- https://bugzilla.redhat.com/show_bug.cgi/attachment.cgi?id=1330994&action=edit
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff;h=5bb88f096363e66ac08e31761f850a1d5aa22244
- https://access.redhat.com/security/vulnerabilities/3199382
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1497691
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff;h=51eadb692a5123b9838e5a68ecace3ac579a3a45
- https://github.com/google/security-research-pocs/tree/master/vulnerabilities/dnsmasq
- https://access.redhat.com/errata/RHSA-2017:2836
- https://bugzilla.redhat.com/show_bug.cgi?id=1495415
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html
- http://nvidia.custhelp.com/app/answers/detail/a_id/4561
- http://thekelleys.org.uk/dnsmasq/CHANGELOG
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt
- http://www.debian.org/security/2017/dsa-3989
- http://www.securityfocus.com/bid/101085
- http://www.securityfocus.com/bid/101977
- http://www.securitytracker.com/id/1039474
- http://www.ubuntu.com/usn/USN-3430-1
- http://www.ubuntu.com/usn/USN-3430-2
- https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf
- https://security.gentoo.org/glsa/201710-27
- https://www.exploit-db.com/exploits/42945/
- https://www.kb.cert.org/vuls/id/973527
- https://www.mail-archive.com/dnsmasq-discuss@lists.thekelleys.org.uk/msg11664.html
- https://www.mail-archive.com/dnsmasq-discuss@lists.thekelleys.org.uk/msg11665.html
- https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq
- https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=51eadb692a5123b9838e5a68ecace3ac579a3a45
- https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html
Frequently Asked Questions
What is the severity of CVE-2017-14495?
CVE-2017-14495 has a severity that allows remote attackers to cause a denial of service through memory consumption.
How do I fix CVE-2017-14495?
To fix CVE-2017-14495, upgrade dnsmasq to version 2.78 or higher depending on your operating system.
Which versions of dnsmasq are affected by CVE-2017-14495?
Versions of dnsmasq before 2.78, specifically those utilizing the --add-mac, --add-cpe-id, or --add-subnet options, are affected.
Can CVE-2017-14495 be exploited remotely?
Yes, CVE-2017-14495 can be exploited remotely, allowing attackers to trigger a denial of service.
What systems are impacted by CVE-2017-14495?
CVE-2017-14495 impacts several Linux distributions, including specific versions of Debian and Ubuntu.
- collector/security-tracker-debian
- agent/type
- agent/remedy
- agent/first-publish-date
- agent/severity
- agent/weakness
- agent/author
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2017-14495
- agent/software-canonical-lookup
- agent/description
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/references
- agent/event
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- package-manager/debian
- package-manager/redhat
- vendor/canonical
- canonical/ubuntu linux
- version/ubuntu linux/14.04
- version/ubuntu linux/16.04
- version/ubuntu linux/17.04
- vendor/debian
- canonical/debian
- version/debian/7.0
- version/debian/7.1
- version/debian/9.0
- vendor/novell
- canonical/opensuse
- version/opensuse/42.2
- version/opensuse/42.3
- vendor/redhat
- canonical/red hat enterprise linux desktop
- version/red hat enterprise linux desktop/7.0
- canonical/red hat enterprise linux server
- version/red hat enterprise linux server/7.0
- canonical/red hat enterprise linux workstation
- version/red hat enterprise linux workstation/7.0
- vendor/thekelleys
- canonical/dnsmasq
- version/dnsmasq/2.77