Privilege escalation in Tigera Calico
CVE-2024-33522
In vulnerable versions of Calico (v3.27.2 and below), Calico Enterprise (v3.19.0-1, v3.18.1, v3.17.3 and below), and Calico Cloud (v19.2.0 and below), an attacker who has local access to the Kubernetes node, can escalate their privileges by exploiting a vulnerability in the Calico CNI install binary. The issue arises from an incorrect SUID (Set User ID) bit configuration in the binary, combined with the ability to control the input binary, allowing an attacker to execute an arbitrary binary with elevated privileges.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (11.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Tigera Calico — versions 0, v3.27.0, v3.28.0
- Tigera Calico Cloud — versions 0
- Tigera Calico Enterprise — versions 0, v3.18.0, v3.19.0-1.0
Weakness classification (CWE)
References
- github.com/projectcalico/calico/issues/7981 (issue-tracking, exploit)
- github.com/projectcalico/calico/pull/8447 (patch)
- github.com/projectcalico/calico/pull/8517 (patch)
- www.tigera.io/security-bulletins-tta-2024-001/ (vendor-advisory)
Frequently asked questions
- What is CVE-2024-33522?
- CVE-2024-33522 is a medium-severity vulnerability in Tigera Calico, classified under Improper Privilege Management. CVSS score: 6.7/10. Published 2024-04-29.
- How severe is CVE-2024-33522?
- Medium severity. CVSS v3 base score is 6.7 out of 10.