CVE-2017-9430
Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of...
Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command line with a long name argument that is mishandled in a strcpy call for argv[0]. An example threat model is a web application that launches dnstracer with an untrusted name string.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command line with a long name argument that is mishandled in a strcpy call for argv[0]. An example threat model is a web application that launches dnstracer with an untrusted name string.
- Record
CVE-2017-9430- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-119
- Updated
- 2026-11-02
CVE List No score
Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command line with a long name argument that is mishandled in a strcpy call for argv[0]. An example threat model is a web application that launches dnstracer with an untrusted name string.
- Record
CVE-2017-9430- Updated
- 2026-11-02
EUVDEUVD-2017-18365 No score
Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command line with a long name argument that is mishandled in a strcpy call for argv[0]. An example threat model is a web application that launches dnstracer with an untrusted name string.
- Record
EUVD-2017-18365- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wr66-cqr2-pw8r
Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of...
Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command line with a long name argument that is mishandled in a strcpy call for argv[0]. An example threat model is a web application that launches dnstracer with an untrusted name string.
- Record
GHSA-wr66-cqr2-pw8r- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-119
- Updated
- 2026-11-02
OSV
Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command line with a long name argument that is mishandled in a strcpy call for argv[0]. An example threat model is a web application that launches dnstracer with an untrusted name string.
- Record
CVE-2017-9430- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2017-9430
Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command line with a long name argument that is mishandled in a strcpy call for argv[0]. An example threat model is a web application that launches dnstracer with an untrusted name string.
- Record
DEBIAN-CVE-2017-9430- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2017-9430
Stack-based buffer overflow in dnstracer through 1.9 allows attackers to cause a denial of service (application crash) or possibly have unspecified other impact via a command line with a long name argument that is mishandled in a strcpy call for argv[0]. An example threat model is a web application that launches dnstracer with an untrusted name string.
- Record
UBUNTU-CVE-2017-9430- CVSS 3.0
- 9.8 Critical
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
dnstracerDebian:12 |
All versions, plus listed versions 1.10-11.9-71.9-8 |
None known |
dnstracerDebian:13 |
All versions, plus listed versions 1.10-11.9-8 |
None known |
dnstracerDebian:14 |
All versions, plus listed versions 1.10-11.9-8 |
None known |
dnstracerUbuntu:14.04:LTS |
All versions, plus listed versions 1.9-4 |
None known |
dnstracerUbuntu:16.04:LTS |
All versions, plus listed versions 1.9-4 |
None known |
dnstracerUbuntu:18.04:LTS |
All versions, plus listed versions 1.9-5 |
None known |
dnstracerUbuntu:20.04:LTS |
All versions, plus listed versions 1.9-5 |
None known |
dnstracerUbuntu:22.04:LTS |
All versions, plus listed versions 1.9-5build11.9-61.9-71.9-7build1 |
None known |
dnstracerUbuntu:24.04:LTS |
All versions, plus listed versions 1.9-7build11.9-81.9-8build1 |
None known |
dnstracerUbuntu:25.10 |
All versions, plus listed versions 1.9-8build1 |
None known |
dnstracerUbuntu:26.10 |
All versions, plus listed versions 1.9-8build21.10-1 |
None known |
dnstracerUbuntu:26.04:LTS |
All versions, plus listed versions 1.9-8build11.9-8build2 |
None known |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | DNSTracer 1.8.1 - Buffer Overflow (PoC) | 2017-06-05 |
| Exploit-DB | DNSTracer 1.9 - Local Buffer Overflow | 2017-08-03 |
| PoC in GitHub | homjxi0e/CVE-2017-9430 | 2017-06-08 |
| PoC in GitHub | j0lama/Dnstracer-1.9-Fix | 2017-11-22 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV, PoC in GitHub |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-9430 is a critical vulnerability (CVSS 9.8) in Dnstracer Project Dnstracer, published June 5, 2017. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 11.4%, the 96th percentile. No source names a fixed version.
References
exploit-db.com/exploits/42115
cxsecurity.com/issue/WLB-2017060030
packetstormsecurity.com/files/142799/DNSTracer-1.8.1-Buffer-Overflow.html
nvd.nist.gov/vuln/detail/CVE-2017-9430
github.com/advisories/GHSA-wr66-cqr2-pw8r
security-tracker.debian.org/tracker/CVE-2017-9430
ubuntu.com/security/CVE-2017-9430
cve.org/CVERecord?id=CVE-2017-9430