An issue was discovered in certain Apple products. macOS before 10.13.5 is affected. The issue involves the "Intel Graphics Driver" component. It allows attackers to bypass intended memory-read restrictions via a crafted app.

In Perl through 5.26.2, the Archive::Tar module allows remote attackers to bypass a directory-traversal protection mechanism, and overwrite arbitrary files, via an archive file containing a symlink and a regular file with the same name.

A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures Software Developer's Manual (SDM) was mishandled in the development of some or all operating-system kernels, resulting in unexpected behavior for #DB exceptions that are deferred by MOV SS or POP SS, as demonstrated by (for example) privilege escalation in Windows, macOS, some Xen configurations, or FreeBSD, or a Linux kernel crash. The MOV to SS and POP SS instructions inhibit interrupts (including NMIs), data breakpoints, and single step trap exceptions until the instruction boundary following the next instruction (SDM Vol. 3A; section 6.8.3). (The inhibited data breakpoints are those on memory accessed by the MOV to SS or POP to SS instruction itself.) Note that debug exceptions are not inhibited by the interrupt enable (EFLAGS.IF) system flag (SDM Vol. 3A; section 2.3). If the instruction following the MOV to SS or POP to SS instruction is an instruction like SYSCALL, SYSENTER, INT 3, etc. that transfers control to the operating system at CPL < 3, the debug exception is delivered after the transfer to CPL < 3 is complete. OS kernels may not expect this order of events and may therefore experience unexpected behavior when it occurs.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. The issue involves the "Status Bar" component. It allows invisible microphone access via a crafted app.

An issue was discovered in certain Apple products. macOS before 10.13.4 is affected. The issue involves the "Disk Images" component. It allows attackers to trigger an app launch upon mounting a crafted disk image.

An issue was discovered in certain Apple products. macOS before 10.13.4 is affected. The issue involves the "LaunchServices" component. It allows attackers to bypass the code-signing protection mechanism via a crafted app.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. The issue involves the "Mail" component. It allows man-in-the-middle attackers to read S/MIME encrypted messages by leveraging an inconsistency in the user interface.

An issue was discovered in certain Apple products. macOS before 10.13.4 is affected. The issue involves the "Admin Framework" component. It allows local users to discover a password by listing a process and its arguments during sysadminctl execution.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "File System Events" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "NSURLSession" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

An issue was discovered in certain Apple products. macOS before 10.13.4 is affected. The issue involves the "Kernel" component. It allows attackers to execute arbitrary code in a privileged context or cause a denial of service (out-of-bounds read) via a crafted app.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. watchOS before 4.3 is affected. The issue involves the "CoreFoundation" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "Quick Look" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. The issue involves the "PluginKit" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "CoreFoundation" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. The issue involves the "Storage" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

An issue was discovered in certain Apple products. macOS before 10.13.4 is affected. The issue involves the "Notes" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. The issue involves the "iCloud Drive" component. A race condition allows attackers to execute arbitrary code in a privileged context via a crafted app.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "Kernel" component. It allows attackers to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

An issue was discovered in certain Apple products. iOS before 11.3 is affected. macOS before 10.13.4 is affected. iCloud before 7.4 on Windows is affected. iTunes before 12.7.4 on Windows is affected. tvOS before 11.3 is affected. watchOS before 4.3 is affected. The issue involves the "Security" component. A buffer overflow allows attackers to execute arbitrary code in a privileged context via a crafted app.