VulnerabilityModified

CVE-2020-9296

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.

CRITICAL 9.8EPSS 1.67%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.67%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 1.67% probability · 76th percentile
CISA KEV: Not listed
Weakness: CWE-917
Affected: netflix/conductor
Source: security-report@netflix.com

References

https://github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2020-002.mdThird Party Advisory
https://github.com/Netflix/security-bulletins/blob/master/advisories/nflx-2020-002.mdThird Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.