Debian Linux Security Advisory 3450-1 - Jann Horn discovered that the setuid-root mount.ecryptfs_private helper in the ecryptfs-utils would mount over any target directory that the user owns, including a directory in procfs. A local attacker could use this flaw to escalate his privileges.
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Ubuntu Security Notice 2876-1 - Jann Horn discovered that mount.ecryptfs_private would mount over certain directories in the proc filesystem. A local attacker could use this to escalate their privileges.
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