CVE-2024-21495
Caddy OAuth Replay Attack via Insecure Randomness
Description
Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness due to using an insecure random number generation library which could possibly be predicted via a brute-force search. Attackers could use the potentially predictable nonce value used for authentication purposes in the OAuth flow to conduct OAuth replay attacks. In addition, insecure randomness is used while generating multifactor authentication (MFA) secrets and creating API keys in the database package.
INFO
Published Date :
Feb. 17, 2024, 5:15 a.m.
Last Modified :
Nov. 21, 2024, 8:54 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.5
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2024-21495 has a 1 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-21495.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Publications from Trail of Bits
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The following list is the news that have been mention
CVE-2024-21495 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-21495 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.
-
Initial Analysis by [email protected]
Feb. 26, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-330 Added CPE Configuration OR *cpe:2.3:a:greenpau:caddy-security:*:*:*:*:*:*:*:* versions from (excluding) 1.0.42 Added Reference Type CVE: https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy/ Types: Third Party Advisory Added Reference Type Snyk: https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy/ Types: Third Party Advisory Added Reference Type CVE: https://github.com/greenpau/caddy-security/issues/265 Types: Issue Tracking Added Reference Type Snyk: https://github.com/greenpau/caddy-security/issues/265 Types: Issue Tracking Added Reference Type CVE: https://github.com/greenpau/go-authcrunch/commit/ecd3725baf2683eb1519bb3c81ae41085fbf7dc2 Types: Patch Added Reference Type Snyk: https://github.com/greenpau/go-authcrunch/commit/ecd3725baf2683eb1519bb3c81ae41085fbf7dc2 Types: Patch Added Reference Type CVE: https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6248275 Types: Third Party Advisory Added Reference Type Snyk: https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6248275 Types: Third Party Advisory -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy/ Added Reference https://github.com/greenpau/caddy-security/issues/265 Added Reference https://github.com/greenpau/go-authcrunch/commit/ecd3725baf2683eb1519bb3c81ae41085fbf7dc2 Added Reference https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6248275 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Received by [email protected]
Feb. 17, 2024
Action Type Old Value New Value Added Description Versions of the package github.com/greenpau/caddy-security before 1.0.42 are vulnerable to Insecure Randomness due to using an insecure random number generation library which could possibly be predicted via a brute-force search. Attackers could use the potentially predictable nonce value used for authentication purposes in the OAuth flow to conduct OAuth replay attacks. In addition, insecure randomness is used while generating multifactor authentication (MFA) secrets and creating API keys in the database package. Added Reference Snyk https://security.snyk.io/vuln/SNYK-GOLANG-GITHUBCOMGREENPAUCADDYSECURITY-6248275 [No types assigned] Added Reference Snyk https://github.com/greenpau/go-authcrunch/commit/ecd3725baf2683eb1519bb3c81ae41085fbf7dc2 [No types assigned] Added Reference Snyk https://blog.trailofbits.com/2023/09/18/security-flaws-in-an-sso-plugin-for-caddy/ [No types assigned] Added Reference Snyk https://github.com/greenpau/caddy-security/issues/265 [No types assigned] Added CWE Snyk CWE-330 Added CVSS V3.1 Snyk AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-21495 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-21495
weaknesses.