CVE-2017-14495
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…
- 7.5HighCVSS base score
- 85.4%Exploitation in 30 daysEPSS · top 0.3% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- 1Public exploitsMetasploit, Nuclei and Exploit-DB
Description
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.
Public exploit
An exploit or proof of concept is public: anyone can try it against an unpatched system. The public collections list an Exploit-DB entry for it. A reference of the record is tagged as an exploit.
Show the exploits2
Exploit-DB1 entry
- Dnsmasq < 2.78 - Lack of free() Denial of Service (Exploit-DB entry) (opens in a new tab)
EDB-ID 42945dos, multiplepublished 2 Oct 2017Verified
References tagged exploit1 reference
- 42945 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Modules, templates and exploits as listed by the Metasploit Framework (BSD-3-Clause), ProjectDiscovery's Nuclei templates (MIT) and the Exploit Database (GPLv2), read once a day. Where the data comes from
Timeline
ID reserved
By mitre
- 17 days later
· 17 days later
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 85.4% · top 0.3% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
n/a
- affected n/a
References
21
- 1039474 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq (opens in a new tab)x_refsource_CONFIRMx_transferred
- DSA-3989 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- https://access.redhat.com/security/vulnerabilities/3199382 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 101085 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- USN-3430-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- 101977 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- VU#973527 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
- GLSA-201710-27 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- USN-3430-2 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [dnsmasq-discuss] 20171002 Announce: dnsmasq-2.78. (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2017:2836 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://nvidia.custhelp.com/app/answers/detail/a_id/4561 (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=51eadb692a5123b9838e5a68ecace3ac579a3a45 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 42945 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- http://thekelleys.org.uk/dnsmasq/CHANGELOG (opens in a new tab)x_refsource_CONFIRMx_transferred
- openSUSE-SU-2017:2633 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html (opens in a new tab)x_refsource_MISCx_transferred
- [dnsmasq-discuss] 20171002 IMPORTANT SECURITY INFORMATION. (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2017-5998 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-14495)Record last updated .