CVE-2017-1086

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.

CVSS v3 3.3 LOW
CVSS v2.0 2.1 LOW

3.3^/10

CVSS v3 : LOW

Vector : AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitability : 1.8 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
http://www.securityfocus.com/bid/101861	Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1039809	Third Party Advisory VDB Entry
https://www.freebsd.org/security/advisories/FreeBSD-SA-17:08.ptrace.asc	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:freebsd:freebsd:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2017-11-16 20:29

Updated : 2024-02-28 16:04

NVD link : CVE-2017-1086

Mitre link : CVE-2017-1086

CVE.ORG link : CVE-2017-1086

JSON object : View

Products Affected

freebsd

freebsd

CWE

CWE-200

Exposure of Sensitive Information to an Unauthorized Actor

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