CVE-2018-12537 Moderate severity vulnerability that affects io.vertx:vertx-core
Attackers can inject arbitrary headers into HTTP requests or responses by exploiting unfiltered carriage return and line feed characters in Vert.x.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2018-12537?
CVE-2018-12537 is a medium-severity vulnerability in The Eclipse Foundation Eclipse Vert.x, published on 14 Aug 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2018-12537?
2 open source packages ship an affected version, including io.vertx:vertx-core. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
io.vertx:vertx-core Maven | From 3.0.0 | 3.5.2 |
io.vertx:vertx-core Maven | From 3.0.0 | 3.5.2 |
Products include Eclipse Vert.x.
How do I fix CVE-2018-12537?
Upgrade io.vertx:vertx-core to 3.5.2 or later.
Is CVE-2018-12537 being exploited?
There is no known exploitation of CVE-2018-12537 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in The Eclipse Foundation Eclipse Vert.x
- CVE-2019-17640 Path Traversal in Eclipse Vert
- CVE-2018-12542 Eclipse Vert.x does not properly neutralize '' (forward slashes) sequences that can resolve to an external location
- CVE-2018-12544 Moderate severity vulnerability that affects io.vertx:vertx-core
- CVE-2026-102469 Deserialization in Eclipse Vert.x
- CVE-2018-12540 High severity vulnerability that affects io.vertx:vertx-web
Sources
Also known as GHSA-6cw8-7j6c-hccp.