CVE-2018-21029
CVSS V2 High 7.5
CVSS V3 Critical 9.8
Description
** DISPUTED ** systemd 239 through 245 accepts any certificate signed by a trusted certificate authority for DNS Over TLS. Server Name Indication (SNI) is not sent, and there is no hostname validation with the GnuTLS backend. NOTE: This has been disputed by the developer as not a vulnerability since hostname validation does not have anything to do with this issue (i.e. there is no hostname to be sent).
Overview
- CVE ID
- CVE-2018-21029
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2019-10-30T22:15:10
- Last Modified Date
- 2022-07-08T16:51:41
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:systemd_project:systemd:*:*:*:*:*:*:*:* | 1 | OR | 239 | 244 |
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 7.5
- Severity
- HIGH
- Exploitability Score
- 10
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 9.8
- Base Severity
- CRITICAL
- Exploitability Score
- 3.9
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/systemd/systemd/issues/9397 | Issue Tracking Third Party Advisory |
| https://blog.cloudflare.com/dns-encryption-explained/ | Third Party Advisory |
| https://github.com/systemd/systemd/blob/v243/src/resolve/resolved-dnstls-gnutls.c#L62-L63 | Patch Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4NLJVOJMB6ANDILRLDZK26YGLYBEPHKY/ | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20191122-0002/ | Third Party Advisory |
| https://github.com/systemd/systemd/pull/13870 | Patch Third Party Advisory |
| https://tools.ietf.org/html/rfc7858#section-4.1 | Third Party Advisory |
| https://github.com/systemd/systemd/blob/v239/man/resolved.conf.xml#L199-L207 | Exploit Third Party Advisory |
| https://github.com/systemd/systemd/blob/v243/man/resolved.conf.xml#L196-L207 | Exploit Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-21029 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-21029 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 15:41:43 | Added to TrackCVE | |||
| 2022-12-04 05:12:52 | 2019-10-30T22:15Z | 2019-10-30T22:15:10 | CVE Published Date | updated |
| 2022-12-04 05:12:52 | 2022-07-08T16:51:41 | CVE Modified Date | updated | |
| 2022-12-04 05:12:52 | Analyzed | Vulnerability Status | updated |