CVE-2020-15136
mediumPriorität · verfolgen · 27OT-Risiko · erhöhtEPSS 0.017 · 76. PerzentilEUUSEPSS · bewertet 2026-10-27
In ectd before versions 3.4.10 and 3.3.23, gateway TLS authentication is only applied to endpoints detected in DNS SRV records. When starting a gateway, TLS authentication will only be attempted on endpoints identified in DNS SRV records for a given domain, which occurs in the discoverEndpoints function. No authentication is performed against endpoints provided in the --endpoints flag. This has been fixed in versions 3.4.10 and 3.3.23 with improved documentation and deprecation of the functionality.
Behebungen
Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.
Ein Hersteller-Fix ist verfügbar.
- Behobenetcd-0:3.3.23-1.el8ost.ppc64le as a component of Red Hat OpenStack Platform 16.1redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:0916 - Behobenetcd-0:3.3.23-1.el8ost.src as a component of Red Hat OpenStack Platform 16.1redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:0916 - Behobenetcd-0:3.3.23-1.el8ost.x86_64 as a component of Red Hat OpenStack Platform 16.1redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:0916 - Behobenetcd-debuginfo-0:3.3.23-1.el8ost.ppc64le as a component of Red Hat OpenStack Platform 16.1redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:0916 - Behobenetcd-debuginfo-0:3.3.23-1.el8ost.x86_64 as a component of Red Hat OpenStack Platform 16.1redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:0916 - Behobenetcd-debugsource-0:3.3.23-1.el8ost.ppc64le as a component of Red Hat OpenStack Platform 16.1redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:0916 - Behobenetcd-debugsource-0:3.3.23-1.el8ost.x86_64 as a component of Red Hat OpenStack Platform 16.1redhat_csaf
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
https://access.redhat.com/errata/RHSA-2021:0916
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (14)
Betroffene Produkte und Versionsbereiche.
Advisories (2)
Hersteller- und Ökosystem-Meldungen dazu.
- RHSA-2021:0916Red Hat Security Advisory: Red Hat OpenStack Platform 16.1.4 (etcd) security update2021-03-17csaf · redhat_csafUS
An update for etcd is now available for Red Hat OpenStack Platform 16.1 (Train). Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- GHSA-wr2v-9rpq-c35qEtcd Gateway TLS authentication only applies to endpoints detected in DNS SRV records2024-01-31ghsa · osvUS
### Vulnerability type Cryptography ### Workarounds Refer to the [gateway documentation](https://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/gateway.md). The vulnerability was spotted due to unclear documentation of how the gateway handles endpoints validation. ### Detail When starting a gateway, TLS authentication will only be attempted on endpoints identified in DNS SRV records for a given domain, which occurs in the discoverEndpoints function. No authentication is performed against endpoints provided in the --endpoints flag. The auditors has noted that appropriate documentation of this validation functionality plus deprecation of this misleading functionality is an acceptable path forward. ### References Find out more on this vulnerability in the [security audit report](https://github.com/etcd-io/etcd/blob/master/security/SECURITY_AUDIT.pdf) ### For more information If you have any questions or comments about this advisory: * Contact the [etcd security committee](https://github.com/etcd-io/etcd/blob/master/security/security-release-process.md#product-security-committee-psc)
auch bekannt als (3)
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quellen
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Referenzen (14)
Externe Belege — Patches, Meldungen, Analysen.
- https://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/gateway.mdcnnvd
- https://github.com/etcd-io/etcd/security/advisories/GHSA-wr2v-9rpq-c35qcnnvd
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP/cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2020-15136cnnvd
- https://packetstormsecurity.com/files/161851/Red-Hat-Security-Advisory-2021-0916-01.htmlcnnvd
- https://packetstormsecurity.com/files/163690/Red-Hat-Security-Advisory-2021-2438-01.htmlcnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.0946cnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.2555cnnvd
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