CVE-2017-14491
What it is
Heap-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 DNS response.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 86.5% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- ReservedThe CVE id was reserved by its CNA
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 86.5% in the next 30 days (EPSS).
- Severity: 9.8 CRITICAL (CVSS).
- Fix: a patch or advisory is linked.
- It meets the bar for Drop everything: critical, and exploited or very likely to be.
Details
- Published
- Last modified
- Exploit probability
- 86.5% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Modified
Affected
- Thekelleys Dnsmasq ≤ 2.77
- Redhat Enterprise Linux Desktop 6.0
- Redhat Enterprise Linux Desktop 7.0
- Redhat Enterprise Linux Server 6.0
- Redhat Enterprise Linux Server 7.0
- Redhat Enterprise Linux Workstation 6.0
- Redhat Enterprise Linux Workstation 7.0
- Canonical Ubuntu Linux 12.04
Attack profile CVSS 3.1 · 9.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2017-14491.md and follow it. Check whether this project is affected by CVE-2017-14491. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://thekelleys.org.uk/dnsmasq/CHANGELOG
- https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf
- https://www.arista.com/en/support/advisories-notices/security-advisories/3577-security-advisory-30
- http://thekelleys.org.uk/dnsmasq/CHANGELOG
- https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf
- https://www.arista.com/en/support/advisories-notices/security-advisories/3577-security-advisory-30
References
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00003.html
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00004.html
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00005.html
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html
- http://nvidia.custhelp.com/app/answers/detail/a_id/4560
- http://nvidia.custhelp.com/app/answers/detail/a_id/4561
- http://packetstormsecurity.com/files/144480/Dnsmasq-2-Byte-Heap-Based-Overflow.html
- http://thekelleys.org.uk/dnsmasq/CHANGELOG
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=0549c73b7ea6b22a3c49beb4d432f185a81efcbc
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt
- http://www.debian.org/security/2017/dsa-3989
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171103-01-dnsmasq-en
- 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
- http://www.ubuntu.com/usn/USN-3430-3
- https://access.redhat.com/errata/RHSA-2017:2836
- https://access.redhat.com/errata/RHSA-2017:2837
- https://access.redhat.com/errata/RHSA-2017:2838
- https://access.redhat.com/errata/RHSA-2017:2839
- https://access.redhat.com/errata/RHSA-2017:2840
- https://access.redhat.com/errata/RHSA-2017:2841
- https://access.redhat.com/security/vulnerabilities/3199382