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(CVE-2025-23021, reported by SivertPL @__tfr)
Added security checks to prevent mounting VeraCrypt volumes on system directories (like /usr/bin) or directories in the user's PATH, which could theoretically allow execution of malicious binaries instead of legitimate system binaries.
Key changes:
- Block mounting on protected system directories (/usr, /bin, /lib, etc.)
This restriction cannot be overridden
- Block mounting on directories present in user's PATH environment variable
This can be overridden with --allow-insecure-mount flag
- Add visual warnings (red border, "[INSECURE MODE]") when mounting on PATH directories is allowed
- Handle symlinks properly when checking paths
- Add new error messages for blocked mount points
To override PATH-based restrictions only (system directories remain protected):
veracrypt --allow-insecure-mount [options] volume mountpoint
Security Impact: Low to Medium
The attack requires either:
- User explicitly choosing a system directory as mount point instead of using VeraCrypt's default mount points
- Or attacker having both filesystem access to modify favorites configuration AND knowledge of the volume password
Default mount points are not affected by this vulnerability.
Security: CVE-2025-23021
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hijacking (CVE-2024-54187, collaboration with SivertPL @__tfr)
This commit fixes a critical security vulnerability where VeraCrypt could be tricked into executing malicious binaries with elevated privileges. The vulnerability has two severe implications:
1. When sudo's secure_path option is disabled, attackers could execute malicious binaries with root privileges by placing them in user-writable PATH directories (e.g., making "sudo mount" execute a malicious mount binary)
2. By placing a malicious sudo binary in PATH, attackers could intercept and steal the user's password when VeraCrypt prompts for sudo authentication
The vulnerability allowed attackers to place malicious binaries in user-writable directories that appear in PATH before system directories, potentially leading to privilege escalation and credential theft.
Key changes:
- Implement FindSystemBinary() to locate executables in secure system paths
- Replace all relative binary paths with absolute paths for system commands
- Add security checks for executable permissions
- Update process execution to use absolute paths for:
* sudo
* mount
* fsck
* terminal emulators
* file managers
* system utilities (hdiutil, mdconfig, vnconfig, lofiadm)
The fix ensures all system binaries are called using their absolute paths from secure system directories, preventing both privilege escalation through PATH manipulation and password theft through sudo hijacking.
Security: CVE-2024-54187
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Update Windows drivers.
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Issue was caused by the fact that Microsoft signing certificate for driver file has changed.
We fix it by updating the SHA512 fingerprint of Microsoft code signing certificate.
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repository conflicts
In a Debian-style APT repository, the pool/ directory groups packages primarily by source package name and binary package name, version, architecture, etc. If two distinct .deb files have identical name and version (as seen in their control file) and same architecture, reprepro will report a conflict when adding one after the other.
So, we need to append distro-specific string to the existing version in order to avoid such conflict when creating VeraCrypt APT repository.
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We add javascript code to the page to handle dynamic selection of donation currency
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instead of obsolete that were not working
This commit increases randomness quality by using more dynamic/varied sources of entropy.
PDH-based disk and network statistics collection in now added to random pool
- Introduced `GetDiskStatistics` to gather disk read/write performance data using PDH API.
- Introduced `GetNetworkStatistics` to gather network send/receive performance data using PDH API.
- Integrated high-resolution timestamps and random intervals to improve entropy in collected data.
- Updated `SlowPoll` function to utilize PDH-based disk and network statistics.
- Removed obsolete NetAPI32-based network statistics collection.
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routine
This provides a slight priority boost for waiting threads and maintains standard practice for disk device drivers.
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- Add IsWin10BuildAtLeast() helper function to check Windows 10 build numbers
- Replace direct build number comparison with IsWin10BuildAtLeast() for ReflectDrivers check
- Update error message to be more specific about Windows version requirement
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To support this, we had to replace ExAllocatePool2 by ExAllocatePoolUninitialized.
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region size parameter
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github.com/Jertzukka/VeraCrypt/tree/ci)
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This update simplifies the logic for detecting active sudo sessions by checking the exit code of the sudo -n -l command, which reliably returns 0 if a session is active.
Additionally, this approach is now applicable to recent macOS versions, as they no longer have the sudo bug that previously prevented us from using this method.
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length (#1456)
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during update
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Windows upgrade
During a Windows upgrade, ownership of veracrypt.sys is set to TrustedInstaller, preventing VeraCrypt from accessing the file during an update.
This commit resolves the issue by temporarily taking ownership of the file to rename it, allowing the new file to be copied. The setup process now obtains additional privileges for this operation, which are properly dropped once the file copying is complete.
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some entries
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1024. Queue write IRPs.
- Made the maximum work items count configurable to allow flexibility based on system needs.
- Increased the default value of max work items count to 1024 to better handle high-throughput scenarios.
- Queue write IRPs in system worker thread to avoid potential deadlocks in write scenarios.
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Reduce the critical section protected by spinlock to only cover the list manipulation operation. Move the ActiveWorkItems counter decrement outside the spinlock using InterlockedDecrement, and separate event signaling from the locked section.
This change minimizes time spent at raised IRQL (DISPATCH_LEVEL) and reduces potential for lock contention.
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drivers.
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since we are targeting Windows 10
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completions
There was a deadlock issue in the driver caused by the CompletionThreadProc function in EncryptedIoQueue.c:
https://sourceforge.net/p/veracrypt/discussion/general/thread/f6e7f623d0/?page=20&limit=25#8362
The driver uses a single thread (CompletionThreadProc) to process IRP completions. When IoCompleteRequest is called within this thread, it can result in new IRPs being generated (e.g., for pagefile operations) that are intercepted by the driver and queued back into the CompletionThreadQueue. Since CompletionThreadProc is the only thread processing this queue and is waiting on IoCompleteRequest, these new IRPs are not handled, leading to a system freeze.
To resolve this issue, the following changes have been made:
Deferred IRP Completion Using Pre-allocated Work Items:
- Introduced a pool of pre-allocated work items (COMPLETE_IRP_WORK_ITEM) to handle IRP completions without causing additional resource allocations that could trigger new IRPs.
- The CompletionThreadProc now queues IRP completions to these work items, which are processed in a different context using IoQueueWorkItem, preventing re-entrant IRPs from blocking the completion thread.
Thread-Safe Work Item Pool Management:
- Implemented a thread-safe mechanism using a semaphore (WorkItemSemaphore), spin lock (WorkItemLock), and a free list (FreeWorkItemsList) to manage the pool of work items.
- Threads acquire and release work items safely, and if all work items are busy, threads wait until one becomes available.
Reference Counting and Improved Stop Handling:
- Added an ActiveWorkItems counter to track the number of active work items.
- Modified EncryptedIoQueueStop to wait for all active work items to complete before proceeding with cleanup, ensuring a clean shutdown.
These changes address the deadlock issue by preventing CompletionThreadProc from being blocked by re-entrant IRPs generated during IoCompleteRequest. By deferring IRP completion to a different context using pre-allocated work items and managing resources properly, we avoid the deadlock and ensure that all IRPs are processed correctly.
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derive_key_blake2s function
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to inform compiler that pointer is unaligned.
This avoids issues with existing bootloaders
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remove 32-bit EFI bootloader files.
We also fix intermediary files folder for Portable and Setup projects
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unused old project files
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Delete unused files.
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