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CVE-2020-25829
CVE information
Published
Last Modified
CVSSv2.0 Severity
CVSSv3.1 Severity
Impact Analysis
Description
An issue has been found in PowerDNS Recursor before 4.1.18, 4.2.x before 4.2.5, and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state, instead of their actual DNSSEC Secure state, via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate), and for clients requesting validation when on-demand validation is enabled (dnssec=process)..
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:powerdns:recursor:*:*:*:*:*:*:*:* |
Yes
|
4.3.0 | 4.3.5 | |
| cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* |
Yes
|
4.2.0 | 4.2.5 | |
| cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* |
Yes
|
- | 4.1.18 | |
| cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:* |
Yes
|
- | - | |
| cpe:2.3:a:opensuse:backports_sle:15.0:sp2:*:*:*:*:*:* |
Yes
|
- | - |