Sophos has discovered a bug in the latest version of the SafeGuard File Encryption Engine, build 29, related to the use of byte-range locks on encrypted files located on network shares. Due to the severity of the issue, the update has been withdrawn. This issue was introduced in build 29 (filter driver version 220.127.116.11) and does not exist in previous versions.
Applies to the following Sophos product(s) and version(s)
SafeGuard Data Exchange 8.1SafeGuard File Encryption 8.1SafeGuard Synchronized Encryption 8.1SafeGuard File Encryption 8.2SafeGuard Synchronized Encryption 8.2SafeGuard Data Exchange 8.2
The issue has been solved and the fixes were integrated in File Encryption Engine build 30.
Sophos recommends upgrading to File Encryption Engine build 30.
No further updates planned, the issue has been addressed in a new version of the File Encryption Engine.
This KB article has been revised for clarity.
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