CVE-2022-30698
CVSS V2 None
CVSS V3 Medium 6.5
Description
NLnet Labs Unbound, up to and including version 1.16.1 is vulnerable to a novel type of the "ghost domain names" attack. The vulnerability works by targeting an Unbound instance. Unbound is queried for a subdomain of a rogue domain name. The rogue nameserver returns delegation information for the subdomain that updates Unbound's delegation cache. This action can be repeated before expiry of the delegation information by querying Unbound for a second level subdomain which the rogue nameserver provides new delegation information. Since Unbound is a child-centric resolver, the ever-updating child delegation information can keep a rogue domain name resolvable long after revocation. From version 1.16.2 on, Unbound checks the validity of parent delegation records before using cached delegation information.
Overview
- CVE ID
- CVE-2022-30698
- Assigner
- sep@nlnetlabs.nl
- Vulnerability Status
- Modified
- Published Version
- 2022-08-01T15:15:09
- Last Modified Date
- 2023-03-29T15:15:07
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:* | 1 | OR | 1.16.2 | |
| cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 6.5
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://lists.debian.org/debian-lts-announce/2023/03/msg00024.html | |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5L3ZFWZZFPBIL654BG75RWXUMPFQJ5EC/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D35CX4SCZVNKZTWJXPDFTHWZHINMGEZD/ | Mailing List Third Party Advisory |
| https://security.gentoo.org/glsa/202212-02 | Third Party Advisory |
| https://www.nlnetlabs.nl/downloads/unbound/CVE-2022-30698_CVE-2022-30699.txt | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2022-30698 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-30698 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-08-01 16:00:23 | Added to TrackCVE | |||
| 2022-12-19 04:27:28 | 2022-12-19T04:15:13 | CVE Modified Date | updated | |
| 2022-12-19 04:27:28 | Analyzed | Modified | Vulnerability Status | updated |
| 2022-12-19 04:27:30 | References | updated | ||
| 2022-12-19 19:13:36 | Modified | Undergoing Analysis | Vulnerability Status | updated |
| 2023-02-23 02:14:28 | 2023-02-23T01:42:16 | CVE Modified Date | updated | |
| 2023-02-23 02:14:28 | Undergoing Analysis | Analyzed | Vulnerability Status | updated |
| 2023-03-31 12:13:34 | 2023-03-29T15:15:07 | CVE Modified Date | updated | |
| 2023-03-31 12:13:34 | Analyzed | Modified | Vulnerability Status | updated |
| 2023-03-31 12:13:35 | References | updated |