CVE-2018-12537: Input Validation
Eclipse Vert.x before version 3.5.2 does not properly neutralize CR and LF characters in HTTP request before return responses. A remote attacker could exploit this to inject abritrary HTTP response headers to potentially mount cross-site scripting and cache poisoning attacks.
External Reference:
https://www.compass-security.com/fileadmin/Datein/Research/Advisories/CSNC-2018-021vertx.txt
Upstream Issue:
https://github.com/eclipse/vert.x/issues/2470
Upstream Patch:
https://github.com/eclipse/vert.x/commit/1bb6445226c39a95e7d07ce3caaf56828e8aab72
Other sources
In Eclipse Vert.x version 3.0 to 3.5.1, the HttpServer response headers and HttpClient request headers do not filter carriage return and line feed characters from the header value. This allow unfiltered values to inject a new header in the client request or server response.
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2018-12537?
CVE-2018-12537 is considered a medium severity vulnerability due to header injection risks.
How do I fix CVE-2018-12537?
To fix CVE-2018-12537, upgrade Eclipse Vert.x to version 3.5.2 or later, where the issue is resolved.
What types of applications are affected by CVE-2018-12537?
CVE-2018-12537 affects applications that utilize Eclipse Vert.x versions between 3.0.0 and 3.5.1.
Can CVE-2018-12537 lead to security exploits?
Yes, CVE-2018-12537 can lead to security exploits through header injection attacks.
What is the main issue with CVE-2018-12537?
The main issue with CVE-2018-12537 is the lack of filtering for carriage return and line feed characters in HTTP headers.