CVE-2024-27918
Coder's OIDC authentication allows email with partially matching domain to register
Description
Coder allows oragnizations to provision remote development environments via Terraform. Prior to versions 2.6.1, 2.7.3, and 2.8.4, a vulnerability in Coder's OIDC authentication could allow an attacker to bypass the `CODER_OIDC_EMAIL_DOMAIN` verification and create an account with an email not in the allowlist. Deployments are only affected if the OIDC provider allows users to create accounts on the provider. During OIDC registration, the user's email was improperly validated against the allowed `CODER_OIDC_EMAIL_DOMAIN`s. This could allow a user with a domain that only partially matched an allowed domain to successfully login or register. An attacker could register a domain name that exploited this vulnerability and register on a Coder instance with a public OIDC provider. Coder instances with OIDC enabled and protected by the `CODER_OIDC_EMAIL_DOMAIN` configuration are affected. Coder instances using a private OIDC provider are not affected, as arbitrary users cannot register through a private OIDC provider without first having an account on the provider. Public OIDC providers are impacted. GitHub authentication and external authentication are not impacted. This vulnerability is remedied in versions 2.8.4, 2.7.3, and 2.6.1 All versions prior to these patches are affected by the vulnerability.*It is recommended that customers upgrade their deployments as soon as possible if they are utilizing OIDC authentication with the `CODER_OIDC_EMAIL_DOMAIN` setting.
INFO
Published Date :
March 21, 2024, 2:52 a.m.
Last Modified :
Nov. 21, 2024, 9:05 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
---|---|---|---|---|---|---|
CVSS 3.1 | HIGH | [email protected] |
References to Advisories, Solutions, and Tools
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CVE-2024-27918
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Common Attack Pattern Enumeration and Classification (CAPEC)
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approaches employed by adversaries to exploit the CVE-2024-27918
weaknesses.
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CVE-2024-27918
vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://github.com/coder/coder/commit/1171ce7add017481d28441575024209ac160ecb0 Added Reference https://github.com/coder/coder/commit/2ba84911f8b02605e5958d5e4a2fe3979ec50b31 Added Reference https://github.com/coder/coder/commit/2d37eb42e7db656e343fe1f36de5ab1a1a62f4fb Added Reference https://github.com/coder/coder/commit/4439a920e454a82565e445e4376c669e3b89591c Added Reference https://github.com/coder/coder/security/advisories/GHSA-7cc2-r658-7xpf -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Received by [email protected]
Mar. 21, 2024
Action Type Old Value New Value Added Description Coder allows oragnizations to provision remote development environments via Terraform. Prior to versions 2.6.1, 2.7.3, and 2.8.4, a vulnerability in Coder's OIDC authentication could allow an attacker to bypass the `CODER_OIDC_EMAIL_DOMAIN` verification and create an account with an email not in the allowlist. Deployments are only affected if the OIDC provider allows users to create accounts on the provider. During OIDC registration, the user's email was improperly validated against the allowed `CODER_OIDC_EMAIL_DOMAIN`s. This could allow a user with a domain that only partially matched an allowed domain to successfully login or register. An attacker could register a domain name that exploited this vulnerability and register on a Coder instance with a public OIDC provider. Coder instances with OIDC enabled and protected by the `CODER_OIDC_EMAIL_DOMAIN` configuration are affected. Coder instances using a private OIDC provider are not affected, as arbitrary users cannot register through a private OIDC provider without first having an account on the provider. Public OIDC providers are impacted. GitHub authentication and external authentication are not impacted. This vulnerability is remedied in versions 2.8.4, 2.7.3, and 2.6.1 All versions prior to these patches are affected by the vulnerability.*It is recommended that customers upgrade their deployments as soon as possible if they are utilizing OIDC authentication with the `CODER_OIDC_EMAIL_DOMAIN` setting. Added Reference GitHub, Inc. https://github.com/coder/coder/security/advisories/GHSA-7cc2-r658-7xpf [No types assigned] Added Reference GitHub, Inc. https://github.com/coder/coder/commit/1171ce7add017481d28441575024209ac160ecb0 [No types assigned] Added Reference GitHub, Inc. https://github.com/coder/coder/commit/2ba84911f8b02605e5958d5e4a2fe3979ec50b31 [No types assigned] Added Reference GitHub, Inc. https://github.com/coder/coder/commit/2d37eb42e7db656e343fe1f36de5ab1a1a62f4fb [No types assigned] Added Reference GitHub, Inc. https://github.com/coder/coder/commit/4439a920e454a82565e445e4376c669e3b89591c [No types assigned] Added CWE GitHub, Inc. CWE-20 Added CVSS V3.1 GitHub, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H