In FreeBSD before 11.1-STABLE, 11.1-RELEASE-p4, 11.0-RELEASE-p15, 10.4-STABLE, 10.4-RELEASE-p3, and 10.3-RELEASE-p24, 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. As a result, some bytes from the kernel stack of the thread using ptrace (PT_LWPINFO) call can be observed in userspace.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: freebsd
Published: 2017-11-16T20:00:00Z
Updated: 2024-09-16T23:25:39.726Z
Reserved: 2016-11-30T00:00:00
Link: CVE-2017-1086
Vulnrichment
No data.
NVD
Status : Analyzed
Published: 2017-11-16T20:29:00.207
Modified: 2017-12-02T12:57:25.750
Link: CVE-2017-1086
Redhat
No data.