Description

The Spring Integration ZIP extension, prior to 1.0.4, exposes an arbitrary file write vulnerability. The vulnerability can be achieved using a specially crafted zip archive (affects other archives as well, bzip2, tar, xz, war, cpio, 7z), that holds path traversal filenames. When the filename gets concatenated to the target extraction directory, the final path ends up outside the target folder. The previous CVE-2018-1263 prevented the framework from unzipping general traversal file names. The special file names, containing a working directory for unzipping, still can slip out of that working directory. This specifically applies to the unzip transformer. This can only happen if an application using this library accepts and unpacks zip files from untrusted sources.

Preconditions include using the unzip transformer and unpacking zip files from untrusted sources.

Affected Spring Products and Versions

Spring Integration Zip Community Extension:

• 1.0.0.RELEASE - 1.0.3.RELEASE

Mitigation

Users of affected versions should upgrade to the corresponding fixed version.

If you are not able to upgrade, make sure you do not unzip untrusted zip files.

Credit

This issue was identified and responsibly reported by Trung Pham, Viettel Cyber Security.

References

• https://tanzu.vmware.com/security/cve-2018-1263
• https://tanzu.vmware.com/security/cve-2018-1261

History

• 2018-05-09: Original mitigation fix published
• 2021-01-28: Fix updated
• 2026-07-09: Formatting improvements.