CVE-2017-14491
critical
CVSS v3
9.8
CVSS v4 NEW
—
VIR risk
10.0
Description
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.
Predictions
Exploit likelihood
97%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
OS impact
Red Hat Affected 2 releases
| Version | Status | Fixed in |
|---|---|---|
| 7.0 | Affected | — |
| 6.0 | Affected | — |
SUSE Affected 5 releases
| Version | Status | Fixed in |
|---|---|---|
| 42.3 | Affected | — |
| 42.2 | Affected | — |
| 12 | Affected | — |
| 11 | Affected | — |
| — | Affected | — |
Ubuntu Affected 4 releases
| Version | Status | Fixed in |
|---|---|---|
| 17.04 | Affected | — |
| 16.04 | Affected | — |
| 14.04 | Affected | — |
| 12.04 | Affected | — |
Debian Mixed 9 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2.78-1 |
| sid | Fixed | 2.78-1 |
| forky | Fixed | 2.78-1 |
| bullseye | Fixed | 2.78-1 |
| bookworm | Fixed | 2.78-1 |
| 9.0 | Affected | — |
| 8.0 | Affected | — |
| 7.1 | Affected | — |
| 7.0 | Affected | — |
Arch Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Fixed | 2.78-1 |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| thekelleys | dnsmasq | {"endIncluding":"2.77"} | |
| suse | linux_enterprise_debuginfo | 11 | |
| suse | linux_enterprise_point_of_sale | 11 | |
| nvidia | geforce_experience | {"startIncluding":"3.0","endExcluding":"3.10.0.55"} | 3.10.0.55 |
| synology | router_manager | 1.1 | |
| nvidia | linux_for_tegra | {"endExcluding":"r21.6"} | r21.6 |
| nvidia | jetson_tk1 | - | |
| nvidia | linux_for_tegra | {"endExcluding":"r24.2.2"} | r24.2.2 |
| nvidia | jetson_tx1 | - | |
References
- https://security.archlinux.org/ASA-201710-1
- 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
CWEs
CWE-787
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.