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CVE-2020-12662
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
Description
Unbound before 1.10.1 has Insufficient Control of Network Message Volume, aka an "NXNSAttack" issue. This is triggered by random subdomains in the NSDNAME in NS records..
CVSSv2.0 Score
- Severity
- Medium
- Base Score
- 5/10
- Exploit Score
- 10/10
- Access Vector
- Network
- Access Complexity
- Low
- Authentication Required
- None
- Impact Score
- 2.9/10
- Confidentiality Impact
- None
- Availability Impact
- Partial
- Integrity Impact
- None
CVSSv3.1 Score
- Severity
- High
- Base Score
- 7.5/10
- Exploit Score
- 3.9/10
- Access Vector
- Network
- Access Complexity
- Low
- Privileges Required
- None
- Impact Score
- 3.6/10
- Confidentiality Impact
- None
- Availability Impact
- High
- Integrity Impact
- None
- Scope
- Unchanged
- User Interaction
- None
Products Affected
CPE | Affected | Vulnerable | Excluding | Edit |
---|---|---|---|---|
cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:* |
Yes
|
- | 1.10.1 | |
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* |
Yes
|
- | - | |
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* |
Yes
|
- | - |
References
- https://nlnetlabs.nl/downloads/unbound/CVE-2020-12662_2020-12663.txt
- http://www.nxnsattack.com
- http://www.openwall.com/lists/oss-security/2020/05/19/5
- https://www.debian.org/security/2020/dsa-4694
- https://www.synology.com/security/advisory/Synology_SA_20_12
- https://usn.ubuntu.com/4374-1/
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00069.html
- http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00067.html
- https://security.netapp.com/advisory/ntap-20200702-0006/
- https://security.FreeBSD.org/advisories/FreeBSD-SA-20:19.unbound.asc
- https://lists.debian.org/debian-lts-announce/2021/02/msg00017.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org