Denial of Service to Argo CD repo-server
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.6.15, 2.7.14, 2.8.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
Argo CD is a declarative continuous deployment for Kubernetes. All versions of ArgoCD starting from v2.4 have a bug where the ArgoCD repo-server component is vulnerable to a Denial-of-Service attack vector. Specifically, the said component extracts a user-controlled tar.gz file without validating the size of its inner files. As a result, a malicious, low-privileged user can send a malicious tar.gz file that exploits this vulnerability to the repo-server, thereby harming the system's functionality and availability. Additionally, the repo-server is susceptible to another vulnerability due to the fact that it does not check the extracted file permissions before attempting to delete them. Consequently, an attacker can craft a malicious tar.gz archive in a way that prevents the deletion of its inner files when the manifest generation process is completed. A patch for this vulnerability has been released in versions 2.6.15, 2.7.14, and 2.8.3. Users are advised to upgrade. The only way to completely resolve the issue is to upgrade, however users unable to upgrade should configure RBAC (Role-Based Access Control) and provide access for configuring applications only to a limited number of administrators. These administrators should utilize trusted and verified Helm charts.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- argoproj argo-cd
From 2.4.0 · fixed in 2.6.15; From 2.7.0 · fixed in 2.7.14; From 2.8.0 · fixed in 2.8.3
- github.com/argoproj/argo-cd/v2Go
From 2.4.0 · fixed in 2.6.15
- github.com/argoproj/argo-cd/v2Go
From 2.7.0 · fixed in 2.7.14
- github.com/argoproj/argo-cd/v2Go
From 2.8.0 · fixed in 2.8.3
- github.com/argoproj/argo-cdGo
All versions
- github.com/argoproj/argo-cd/v2Go
From 2.4.0 · fixed in 2.6.15; From 2.7.0 · fixed in 2.7.14; From 2.8.0 · fixed in 2.8.3