VeraCrypt
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authorMounir IDRASSI <mounir.idrassi@idrix.fr>2025-01-11 23:22:40 +0100
committerMounir IDRASSI <mounir.idrassi@idrix.fr>2025-01-14 14:59:45 +0100
commit078d1410dd3307956638d9c90f40ec15032ef01f (patch)
tree5b1bba6f7d7e9509a14642d9182b518ba40c8a2c /src/Core/Unix/CoreUnix.h
parent2cca2e1dafa405addc3af8724baf8563f352ac1c (diff)
downloadVeraCrypt-078d1410dd3307956638d9c90f40ec15032ef01f.tar.gz
VeraCrypt-078d1410dd3307956638d9c90f40ec15032ef01f.zip
Linux/FreeBSD: Prevent mounting volumes on system directories and PATH (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
Diffstat (limited to 'src/Core/Unix/CoreUnix.h')
-rw-r--r--src/Core/Unix/CoreUnix.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/Core/Unix/CoreUnix.h b/src/Core/Unix/CoreUnix.h
index 0f1ab344..ae26bf0a 100644
--- a/src/Core/Unix/CoreUnix.h
+++ b/src/Core/Unix/CoreUnix.h
@@ -48,6 +48,8 @@ namespace VeraCrypt
virtual void SetFileOwner (const FilesystemPath &path, const UserId &owner) const;
virtual DirectoryPath SlotNumberToMountPoint (VolumeSlotNumber slotNumber) const;
virtual void WipePasswordCache () const { throw NotApplicable (SRC_POS); }
+ virtual bool IsProtectedSystemDirectory (const DirectoryPath &directory) const;
+ virtual bool IsDirectoryOnUserPath(const DirectoryPath &directory) const;
protected:
virtual DevicePath AttachFileToLoopDevice (const FilePath &filePath, bool readOnly) const { throw NotApplicable (SRC_POS); }