CVE-2023-46317
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical...
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.
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
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.
- Record
CVE-2023-46317- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
CVE List No score
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.
- Record
CVE-2023-46317- Updated
- 2026-11-02
EUVDEUVD-2023-50538 No score
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.
- Record
EUVD-2023-50538- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-vwhm-7rfg-7rqc
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical...
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.
- Record
GHSA-vwhm-7rfg-7rqc- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVDEBIAN-CVE-2023-46317
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.
- Record
DEBIAN-CVE-2023-46317- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVUBUNTU-CVE-2023-46317
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.
- Record
UBUNTU-CVE-2023-46317- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV No score
Knot Resolver before 5.7.0 performs many TCP reconnections upon receiving certain nonsensical responses from servers.
- Record
CVE-2023-46317- Updated
- 2026-11-04
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
knot-resolverDebian:12 |
before 5.6.0-1+deb12u1, plus listed versions 5.6.0-1 |
5.6.0-1+deb12u1 |
knot-resolverDebian:13 |
before 5.7.0-1 | 5.7.0-1 |
knot-resolverDebian:14 |
before 5.7.0-1 | 5.7.0-1 |
knot-resolverUbuntu:Pro:16.04:LTS |
All versions, plus listed versions 1.0.0~beta2-123-g6134920-11.0.0~beta3-11.0.0~beta3-1ubuntu0.1~esm1 |
None known |
knot-resolverUbuntu:Pro:18.04:LTS |
All versions, plus listed versions 1.3.3-11.5.0-41.5.1-11.5.2-12.0.0-3 Show 4 moreShow less2.1.0-12.1.0-22.1.1-12.1.1-1ubuntu0.1~esm2 |
None known |
knot-resolverUbuntu:20.04:LTS |
All versions, plus listed versions 3.2.1-33.2.1-3ubuntu13.2.1-3ubuntu23.2.1-3ubuntu2.13.2.1-3ubuntu2.2 |
None known |
knot-resolverUbuntu:Pro:22.04:LTS |
All versions, plus listed versions 5.3.1-15.4.2-15.4.3-15.4.4-15.4.4-1ubuntu0.1~esm1 |
None known |
knot-resolverUbuntu:24.04:LTS |
All versions, plus listed versions 5.6.0-1.15.7.0-1build15.7.1-15.7.2-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | OSV | |
| aliases | EUVD | |
| aliases | ||
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-46317 is a high vulnerability (CVSS 7.5) in Nic Knot Resolver, published October 22, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.76%, the 55th percentile. Fixed in knot-resolver 5.6.0-1+deb12u1.
References
knot-resolver.cz/2023-08-22-knot-resolver-5.7.0.html
gitlab.nic.cz/knot/knot-resolver/-/merge_requests/1448
nvd.nist.gov/vuln/detail/CVE-2023-46317
github.com/advisories/GHSA-vwhm-7rfg-7rqc
security-tracker.debian.org/tracker/CVE-2023-46317
ubuntu.com/security/CVE-2023-46317
cve.org/CVERecord?id=CVE-2023-46317