# CVE-2015-2156: Information Exposure in Netty

Source: https://junglewise.ai/threats/cve-2015-2156-information-exposure-in-netty  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2020-06-30  
License: CC BY 4.0 with a link back

CVE-2015-2156 · Severity: low · CVSS 3 · Published 2020-06-30

Information Exposure in Netty

Technologies: [io.netty:netty (Maven)](https://junglewise.ai/threats/technologies/io-netty-netty), [org.jboss.netty:netty (Maven)](https://junglewise.ai/threats/technologies/org-jboss-netty-netty). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven).

## Quick answers

**Is CVE-2015-2156 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2015-2156 being exploited in the wild.

**How severe is CVE-2015-2156?** Low severity, with a CVSS score of 3, published 30 June 2020.

**Which products and versions are affected?** io.netty:netty (Maven) ECOSYSTEM:introduced=3.10.0,fixed=3.10.3.Final; io.netty:netty-parent (Maven) ECOSYSTEM:introduced=4.0.0,fixed=4.0.28.Final; org.jboss.netty:netty (Maven) ECOSYSTEM:introduced=0,fixed=3.9.8.Final.

**Is there a fix for CVE-2015-2156?** Yes. io.netty:netty (Maven): upgrade to 3.10.3.Final or later; io.netty:netty-parent (Maven): upgrade to 4.0.28.Final or later; org.jboss.netty:netty (Maven): upgrade to 3.9.8.Final or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2015-2156?** Check whether you run io.netty:netty (Maven), io.netty:netty-parent (Maven) or org.jboss.netty:netty (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- io.netty:netty (Maven): upgrade to 3.10.3.Final or later

  ```sh
  # set io.netty:netty to 3.10.3.Final in your pom.xml or build.gradle
  ```

- io.netty:netty-parent (Maven): upgrade to 4.0.28.Final or later

  ```sh
  # set io.netty:netty-parent to 4.0.28.Final in your pom.xml or build.gradle
  ```

- org.jboss.netty:netty (Maven): upgrade to 3.9.8.Final or later

  ```sh
  # set org.jboss.netty:netty to 3.9.8.Final in your pom.xml or build.gradle
  ```


## Affected products

- io.netty:netty (Maven) ECOSYSTEM:introduced=3.10.0,fixed=3.10.3.Final
- io.netty:netty-parent (Maven) ECOSYSTEM:introduced=4.0.0,fixed=4.0.28.Final
- org.jboss.netty:netty (Maven) ECOSYSTEM:introduced=0,fixed=3.9.8.Final

## Identifiers

- CVE-2015-2156
- GHSA-xfv3-rrfm-f2rv

## Related threats

- [Netty denial of service vulnerability](https://junglewise.ai/threats/cve-2014-0193-netty-denial-of-service-vulnerability)
- [HTTP request smuggling in netty](https://junglewise.ai/threats/cve-2021-43797-http-request-smuggling-in-netty)
- [SnappyFrameDecoder doesn't restrict chunk length any may buffer skippable chunks in an unnecessary way](https://junglewise.ai/threats/cve-2021-37137-snappyframedecoder-doesn-t-restrict-chunk-length-any-may-buffer)
- [Bzip2Decoder doesn't allow setting size restrictions for decompressed data](https://junglewise.ai/threats/cve-2021-37136-bzip2decoder-doesn-t-allow-setting-size-restrictions-for)
- [Possible request smuggling in HTTP/2 due missing validation of content-length](https://junglewise.ai/threats/cve-2021-21409-possible-request-smuggling-in-http-2-due-missing-validation-of)