Etcd
CVE-2020-15136
MEDIUM
Severity by source
AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
In ectd before versions 3.4.10 and 3.3.23, gateway TLS authentication is only applied to endpoints detected in DNS SRV records. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Improper Authentication (CWE-287), which allows attackers to bypass authentication mechanisms to gain unauthorized access. 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. Affected products include: Redhat Etcd, Fedoraproject Fedora.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Implement multi-factor authentication, enforce strong password policies, use proven authentication frameworks.
A cross-site request forgery flaw was found in etcd 3.3.1 and earlier. Rated high severity (CVSS 8.8), this vulnerabilit
Authentication vulnerability found in Etcd-io v.3.4.10 allows remote attackers to escalate privileges via the debug func
DNS rebinding vulnerability found in etcd 3.3.1 and earlier. Rated medium severity (CVSS 5.5), this vulnerability is low
Certificate revocation bypass in etcd affects clusters running versions before 3.5.32 and before 3.6.13 that are configu
In etcd before versions 3.3.23 and 3.4.10, the etcd gateway is a simple TCP proxy to allow for basic service discovery a
etcd before versions 3.3.23 and 3.4.10 does not perform any password length validation, which allows for very short pass
In etcd before versions 3.3.23 and 3.4.10, certain directory paths are created (etcd data directory and the directory pa
In etcd before versions 3.3.23 and 3.4.10, it is possible to have an entry index greater then the number of entries in t
In etcd before versions 3.3.23 and 3.4.10, a large slice causes panic in decodeRecord method. Rated medium severity (CVS
etcd is a distributed key-value store for the data of a distributed system. Rated medium severity (CVSS 4.3), this vulne
Same weakness CWE-287 – Improper Authentication
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today