#VU25726 Code Injection in Dropwizard - CVE-2020-5245

Vulnerability identifier: #VU25726

Vulnerability risk: High

CVSSv4.0: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2020-5245

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Dropwizard
Web applications / JS libraries

Vendor: Coda Hale

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation. A remote authenticated attacker can inject arbitrary Java Expression Language expressions when using the self-validating feature and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Dropwizard: 1.3.0 - 2.0.1

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External links
https://github.com/dropwizard/dropwizard/commit/d87d1e4f8e20f6494c0232bf8560c961b46db634
https://github.com/dropwizard/dropwizard/pull/3157
https://github.com/dropwizard/dropwizard/pull/3160
https://github.com/dropwizard/dropwizard/security/advisories/GHSA-3mcp-9wr4-cjqf
https://snyk.io/vuln/SNYK-JAVA-IODROPWIZARD-552147

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.