CVE-2018-1110
A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial...
A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.
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
A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.
- Record
CVE-2018-1110- 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 - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-20
- Updated
- 2026-11-02
CVE List No score
A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.
- Record
CVE-2018-1110- Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2018-11755 No score
A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.
- Record
EUVD-2018-11755- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-gv92-3p38-6rrw No score
A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial...
A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.
- Record
GHSA-gv92-3p38-6rrw- Weakness
- CWE-20
- Updated
- 2026-11-02
OSV
A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.
- Record
CVE-2018-1110- 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-2018-1110
A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.
- Record
DEBIAN-CVE-2018-1110- 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-2018-1110
A flaw was found in knot-resolver before version 2.3.0. Malformed DNS messages may cause denial of service.
- Record
UBUNTU-CVE-2018-1110- 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
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
knot-resolverDebian:12 |
before 2.3.0-1 | 2.3.0-1 |
knot-resolverDebian:13 |
before 2.3.0-1 | 2.3.0-1 |
knot-resolverDebian:14 |
before 2.3.0-1 | 2.3.0-1 |
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 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2018-1110 is a high vulnerability (CVSS 7.5) in Cz.nic Knot-resolver, published March 30, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.24%, the 69th percentile. Fixed in knot-resolver 2.3.0-1.
References
bugzilla.redhat.com/show_bug.cgi?id=1944328
knot-resolver.cz/2018-04-23-knot-resolver-2.3.0.html
nvd.nist.gov/vuln/detail/CVE-2018-1110
github.com/advisories/GHSA-gv92-3p38-6rrw
security-tracker.debian.org/tracker/CVE-2018-1110
ubuntu.com/security/CVE-2018-1110
openwall.com/lists/oss-security/2018/04/23/2
cve.org/CVERecord?id=CVE-2018-1110