Missing Release of Resource after Effective Lifetime Affecting dnsmasq package, versions <0:2.76-5.amzn2
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN2-DNSMASQ-1671801
- published27 Sept 2021
- disclosed3 Oct 2017
Introduced: 3 Oct 2017
CVE-2017-14495 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 dnsmasq to version 0:2.76-5.amzn2 or higher.
This issue was patched in ALAS2-2019-1251.
NVD Description
Note: Versions mentioned in the description apply only to the upstream dnsmasq package and not the dnsmasq package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
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.
References
- http://www.securityfocus.com/bid/101085
- http://www.securityfocus.com/bid/101977
- https://www.kb.cert.org/vuls/id/973527
- http://nvidia.custhelp.com/app/answers/detail/a_id/4561
- https://access.redhat.com/security/vulnerabilities/3199382
- https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf
- https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq
- http://thekelleys.org.uk/dnsmasq/CHANGELOG
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=51eadb692a5123b9838e5a68ecace3ac579a3a45
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14495
- http://www.debian.org/security/2017/dsa-3989
- https://www.exploit-db.com/exploits/42945/
- https://security.gentoo.org/glsa/201710-27
- https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
- 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://access.redhat.com/errata/RHSA-2017:2836
- http://www.securitytracker.com/id/1039474
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html
- http://www.ubuntu.com/usn/USN-3430-1
- http://www.ubuntu.com/usn/USN-3430-2
- 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
- https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html
- https://www.exploit-db.com/exploits/42945