Privilege escalation in Falco
CVE-2021-33505
A local malicious user can circumvent the Falco detection engine through 0.28.1 by running a program that alters arguments of system calls being executed. Issue is fixed in Falco versions >= 0.29.1.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.003 (26.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/falcosecurity/falco/releases (Third Party Advisory, Release Notes)
- github.com/falcosecurity/falco/pull/1675 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-33505?
- CVE-2021-33505 is a high-severity vulnerability in Falco, classified under Improper Privilege Management. CVSS score: 7.8/10. Published 2021-07-15.
- How severe is CVE-2021-33505?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-33505 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.