CVE-2024-21662

2024-03-1820:20:58

redhat.com

access.redhat.com

argo cd

rate limit

bypass

incomplete fix

cache-based mechanism

overflow

excessive attempts

brute force attacks

admin account

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

0.002 Low

EPSS

Percentile

52.8%

JSON

A flaw was found in Argo CD, where the rate limit for login attempts may be bypassed due to an incomplete fix for CVE-2020-8827. The cache-based mechanism is limited to a defaultMaxCacheSize of 1000 entries. An attacker can overflow this cache by sending excessive login attempts for different users, thereby pushing out the admin account’s failed attempts and effectively resetting the rate limit for that account. This enables attackers to perform brute force attacks at an accelerated rate, especially targeting the default admin account.

Mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.