CVE-2022-30699
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 rogue domain name when the cached delegation information is about to expire. The rogue nameserver delays the response so that the cached delegation information is expired. Upon receiving the delayed answer containing the delegation information, Unbound overwrites the now expired entries. This action can be repeated when the delegation information is about to expire making the rogue delegation information ever-updating. From version 1.16.2 on, Unbound stores the start time for a query and uses that to decide if the cached delegation information can be overwritten.
Overview
- CVE ID
- CVE-2022-30699
- 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-2022-30699 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-30699 |
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 04:27:32 | References | updated | ||
| 2022-12-19 19:13:36 | Modified | Undergoing Analysis | Vulnerability Status | updated |
| 2023-02-23 02:14:28 | 2023-02-23T01:44:30 | 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 |