Vulnerability Details : CVE-2020-15136
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.
Vulnerability category: BypassGain privilege
Products affected by CVE-2020-15136
- cpe:2.3:a:redhat:etcd:*:*:*:*:*:*:*:*
- cpe:2.3:a:redhat:etcd:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-15136
0.17%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 40 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-15136
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
5.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:N |
8.6
|
4.9
|
NIST | |
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |
2.2
|
4.2
|
NIST | |
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N |
2.2
|
4.2
|
GitHub, Inc. |
CWE ids for CVE-2020-15136
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: security-advisories@github.com (Secondary)
-
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-15136
-
https://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/gateway.md
etcd/gateway.md at master · etcd-io/etcd · GitHubBroken Link
-
https://github.com/etcd-io/etcd/security/advisories/GHSA-wr2v-9rpq-c35q
Gateway TLS authentication only applies to endpoints detected in DNS SRV records · Advisory · etcd-io/etcd · GitHubThird Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L6B6R43Y7M3DCHWK3L3UVGE2K6WWECMP/
[SECURITY] Fedora 32 Update: etcd-3.4.13-1.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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