Buffer overflow in Thekelleys Dnsmasq
CVE-2017-14493
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.836 (99.7th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.836 · newest: 0.836 · change: 0.000
Affected products
- Thekelleys Dnsmasq
- Canonical Ubuntu Linux — versions 14.04, 16.04, 17.04
- Debian Linux — versions 7.0, 7.1, 9.0
- openSUSE Leap — versions 42.2, 42.3
- Red Hat Enterprise Linux Desktop — versions 7.0
- Red Hat Enterprise Linux Server — versions 7.0
- Red Hat Enterprise Linux Workstation — versions 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.securitytracker.com/id/1039474 (VDB Entry, Third Party Advisory, vdb-entry)
- www.synology.com/support/security/Synology_SA_17_59_Dnsmasq (Third Party Advisory)
- www.debian.org/security/2017/dsa-3989 (vendor-advisory, Third Party Advisory)
- thekelleys.org.uk/gitweb/
- access.redhat.com/security/vulnerabilities/3199382 (Third Party Advisory, Issue Tracking)
- www.securityfocus.com/bid/101085 (VDB Entry, Third Party Advisory, vdb-entry)
- www.exploit-db.com/exploits/42943/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- www.ubuntu.com/usn/USN-3430-1 (vendor-advisory, Third Party Advisory)
- www.kb.cert.org/vuls/id/973527 (US Government Resource, Third Party Advisory, third-party-advisory)
- security.gentoo.org/glsa/201710-27 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-14493?
- CVE-2017-14493 is a critical-severity vulnerability in Thekelleys Dnsmasq, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.8/10. Published 2017-10-03.
- How severe is CVE-2017-14493?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-14493 known to be exploited?
- 11 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.