8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
0.042 Low
EPSS
Percentile
92.0%
Dropwizard-Validation before 1.3.19, and 2.0.2 may allow arbitrary code execution on the host system, with the privileges of the Dropwizard service account, by injecting arbitrary Java Expression Language expressions when using the self-validating feature.
A server-side template injection was identified in the self-validating (@SelfValidating
) feature of dropwizard-validation enabling attackers to inject arbitrary Java EL expressions, leading to Remote Code Execution (RCE) vulnerability.
If you’re using a self-validating bean (via @SelfValidating
), an upgrade to Dropwizard 1.3.19 or 2.0.2 is strongly recommended.
This issue may allow Remote Code Execution (RCE), allowing to run arbitrary code on the host system (with the privileges of the Dropwizard service account privileges) by injecting arbitrary Java Expression Language (EL) expressions when using the self-validating feature (@SelfValidating
, @SelfValidation
) in dropwizard-validation.
The issue has been fixed in dropwizard-validation****1.3.19and2.0.2. We strongly recommend upgrading to one of these versions.
If you are not able to upgrade to one of the aforementioned versions of dropwizard-validation but still want to use the @SelfValidating
feature, make sure to properly sanitize any message you’re adding to the ViolationCollector
in the method annotated with @SelfValidation
.
Example:
@SelfValidation
public void validateFullName(ViolationCollector col) {
if (fullName.contains("_")) {
// Sanitize fullName variable by escaping relevant characters such as "$"
col.addViolation("Full name contains invalid characters: " + sanitizeJavaEl(fullName));
}
}
If you have any questions or comments about this advisory:
If you want to responsibly disclose a security issue in Dropwizard or one of its official modules, please contact us via the published channels in our security policy:
https://github.com/dropwizard/dropwizard/security/policy#reporting-a-vulnerability
beanvalidation.org/2.0/spec/#validationapi-message-defaultmessageinterpolation
docs.jboss.org/hibernate/validator/6.1/reference/en-US/html_single/#section-interpolation-with-message-expressions
docs.oracle.com/javaee/7/tutorial/jsf-el.htm
github.com/dropwizard/dropwizard/commit/d87d1e4f8e20f6494c0232bf8560c961b46db634
github.com/dropwizard/dropwizard/pull/3157
github.com/dropwizard/dropwizard/pull/3160
github.com/dropwizard/dropwizard/security/advisories/GHSA-3mcp-9wr4-cjqf
nvd.nist.gov/vuln/detail/CVE-2020-5245
www.oracle.com/security-alerts/cpuapr2022.html
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:S/C:C/I:C/A:C
0.042 Low
EPSS
Percentile
92.0%