CVE-2017-14496 EXPLOIT
7.5
HIGH · CVSS 3.0 · EPSS 66.3% (pctl 99)
Patch early
A public exploit exists.
Description
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.
Scoring
| CVSS | 7.5 (HIGH, v3.0) |
|---|---|
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| EPSS | 66.35% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-191 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2017-10-03 |
| Last modified | 2026-06-17 |
Affected (8)
| Vendor | Product |
|---|---|
| canonical | ubuntu linux |
| debian | debian linux |
| android | |
| novell | leap |
| redhat | enterprise linux desktop |
| redhat | enterprise linux server |
| redhat | enterprise linux workstation |
| thekelleys | dnsmasq |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Dnsmasq < 2.78 - Integer Underflow | 2017-10-02 |
References
- 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://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=897c113fda0886a28a986cc6ba17bb93bd6cb1c7
- 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://access.redhat.com/errata/RHSA-2017:2836
- https://access.redhat.com/security/vulnerabilities/3199382
- https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf
- https://security.gentoo.org/glsa/201710-27
- https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
- https://source.android.com/security/bulletin/2017-10-01
- https://www.exploit-db.com/exploits/42946/
- https://www.kb.cert.org/vuls/id/973527
- https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html
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