CVE-2024-21661
What it is
Argo CD is a declarative, GitOps continuous delivery tool for Kubernetes. Prior to versions 2.8.13, 2.9.9, and 2.10.4, an attacker can exploit a critical flaw in the application to initiate a Denial of Service (DoS) attack, rendering the application inoperable and affecting all users. The issue arises from unsafe manipulation of an array in a multi-threaded environment. The vulnerability is rooted in the application's code, where an array is being modified while it is being iterated over. This is a classic programming error but becomes critically unsafe when executed in a multi-threaded environment. When two threads interact with the same array simultaneously, the application crashes. This is a Denial of Service (DoS) vulnerability. Any attacker can crash the application continuously, making it impossible for legitimate users to access the service. The issue is exacerbated because it does not require authentication, widening the pool of potential attackers. Versions 2.8.13, 2.9.9, and 2.10.4 contain a patch for this issue.
At a glance
- Exploitability
- Can be exploited over the network without logging in. High risk of service disruption.
- Exploit odds
- 1.2% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.2% in the next 30 days (EPSS).
- Severity: 7.5 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.2% · EPSS, next 30 days
- Weakness
- CWE-787 · Out-of-bounds write
- Record status
- Analyzed
Affected
- Argoproj Argo Cd < 2.8.13
- Argoproj Argo Cd < 2.9.9
- Argoproj Argo Cd < 2.10.4
Attack profile CVSS 3.1 · 7.5
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2024-21661.md and follow it. Check whether this project is affected by CVE-2024-21661. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/argoproj/argo-cd/commit/2a22e19e06aaf6a1e734443043310a66c234e345
- https://github.com/argoproj/argo-cd/commit/5bbb51ab423f273dda74ab956469843d2db2e208
- https://github.com/argoproj/argo-cd/commit/ce04dc5c6f6e92033221ec6d96b74403b065ca8b
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-6v85-wr92-q4p7
- https://github.com/argoproj/argo-cd/commit/2a22e19e06aaf6a1e734443043310a66c234e345
- https://github.com/argoproj/argo-cd/commit/5bbb51ab423f273dda74ab956469843d2db2e208
- https://github.com/argoproj/argo-cd/commit/ce04dc5c6f6e92033221ec6d96b74403b065ca8b
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-6v85-wr92-q4p7
References
- https://github.com/argoproj/argo-cd/blob/54601c8fd30b86a4c4b7eb449956264372c8bde0/util/session/sessionmanager.go#L302-L311
- https://github.com/argoproj/argo-cd/commit/2a22e19e06aaf6a1e734443043310a66c234e345
- https://github.com/argoproj/argo-cd/commit/5bbb51ab423f273dda74ab956469843d2db2e208
- https://github.com/argoproj/argo-cd/commit/ce04dc5c6f6e92033221ec6d96b74403b065ca8b
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-6v85-wr92-q4p7
- https://github.com/argoproj/argo-cd/blob/54601c8fd30b86a4c4b7eb449956264372c8bde0/util/session/sessionmanager.go#L302-L311
- https://github.com/argoproj/argo-cd/commit/2a22e19e06aaf6a1e734443043310a66c234e345
- https://github.com/argoproj/argo-cd/commit/5bbb51ab423f273dda74ab956469843d2db2e208
- https://github.com/argoproj/argo-cd/commit/ce04dc5c6f6e92033221ec6d96b74403b065ca8b
- https://github.com/argoproj/argo-cd/security/advisories/GHSA-6v85-wr92-q4p7