RCE in Netflix Conductor
CVE-2020-9296
Netflix Titus uses Java Bean Validation (JSR 380) custom constraint validators. When building custom constraint violation error messages, different types of interpolation are supported, including Java EL expressions. If an attacker can inject arbitrary data in the error message template being passed to ConstraintValidatorContext.buildConstraintViolationWithTemplate() argument, they will be able to run arbitrary Java code.
Vulnerability class: Log4Shell (CVE-2021-44228)
EPSS: 0.020 (78.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Netflix Conductor
- N/a Netflix Titus — versions All versions prior to version v0.1.1-rc.274
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-report@netflix.com (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2020-9296?
- CVE-2020-9296 is a critical-severity vulnerability in Netflix Conductor, classified under Improper Neutralization of Special Elements used in an Expression Language Statement (Expression Language Injection). CVSS score: 9.8/10. Published 2020-06-16.
- How severe is CVE-2020-9296?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2020-9296 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.