FreeBSD683C714D-2D91-11E9-BF3E-A4BADB2F4699FreeBSD -- System call kernel data register leak
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
0.0004 Low
EPSS
Percentile
12.6%
Problem Description:
The callee-save registers are used by kernel and for
some of them (%r8, %r10, and for non-PTI configurations,
%r9) the content is not sanitized before return from syscalls,
potentially leaking sensitive information.
Impact:
Typically an address of some kernel data structure used
in the syscall implementation, is exposed.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| FreeBSD | any | noarch | freebsd-kernel | = 12.0 | UNKNOWN |
| FreeBSD | any | noarch | freebsd-kernel | < 12.0_3 | UNKNOWN |
Related
2.1 Low
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:L/AC:L/Au:N/C:P/I:N/A:N
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
0.0004 Low
EPSS
Percentile
12.6%