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VuXML ID	Description
34a3f9b5-dab3-11e7-b5af-a4badb2f4699	FreeBSD -- Kernel data leak via ptrace(PT_LWPINFO) Problem Description: Not all information in the struct ptrace_lwpinfo is relevant for the state of any thread, and the kernel does not fill the irrelevant bytes or short strings. Since the structure filled by the kernel is allocated on the kernel stack and copied to userspace, a leak of information of the kernel stack of the thread is possible from the debugger. Impact: Some bytes from the kernel stack of the thread using ptrace(PT_LWPINFO) call can be observed in userspace. Discovery 2017-11-15 Entry 2017-12-06 FreeBSD-kernel ge 11.1 lt 11.1_4 ge 11.0 lt 11.0_15 ge 10.4 lt 10.4_3 ge 10.3 lt 10.3_24 CVE-2017-1086 SA-17:08.ptrace

VuXML ID

Description

34a3f9b5-dab3-11e7-b5af-a4badb2f4699

FreeBSD -- Kernel data leak via ptrace(PT_LWPINFO)

Problem Description:

Not all information in the struct ptrace_lwpinfo is relevant for the state of any thread, and the kernel does not fill the irrelevant bytes or short strings. Since the structure filled by the kernel is allocated on the kernel stack and copied to userspace, a leak of information of the kernel stack of the thread is possible from the debugger.

Impact:

Some bytes from the kernel stack of the thread using ptrace(PT_LWPINFO) call can be observed in userspace.

Discovery 2017-11-15
Entry 2017-12-06
FreeBSD-kernel

ge 11.1 lt 11.1_4

ge 11.0 lt 11.0_15

ge 10.4 lt 10.4_3

ge 10.3 lt 10.3_24

CVE-2017-1086
SA-17:08.ptrace