# CVE-2021-29425: libcommons-io-java: In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like...

CVE-2021-29425 is fixed in libcommons-io-java on 1 platform, first by libcommons-io-java 2.6-2ubuntu0.18.04.1, released April 13, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-29425
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.1055
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 13, 2021

## Description

In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like "//../foo", or "\\..\foo", the result would be the same value, thus possibly providing access to files in the parent directory, but not further above (thus "limited" path traversal), if the calling code would use the result to construct a path value.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libcommons-io-java Ubuntu 18.04.6 LTS (bionic) | 2.6-2ubuntu0.18.04.1 | [libcommons-io-java 2.6-2ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libcommons-io-java-2.6-2ubuntu0.18.04.1.md) | Apr 13, 2021 |
| Linux | libcommons-io-java Ubuntu 20.04 LTS (focal) | 2.6-2ubuntu0.20.04.1 | [libcommons-io-java 2.6-2ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libcommons-io-java-2.6-2ubuntu0.20.04.1.md) | Apr 13, 2021 |

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