CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
31.1%
Problem Description:
The MOV SS and POP SS instructions inhibit debug exceptions
until the instruction boundary following the next instruction.
If that instruction is a system call or similar instruction
that transfers control to the operating system, the debug
exception will be handled in the kernel context instead of
the user context.
Impact:
An authenticated local attacker may be able to read
sensitive data in kernel memory, control low-level operating
system functions, or may panic the system.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
FreeBSD | any | noarch | freebsd-kernel | = 11.1 | UNKNOWN |
FreeBSD | any | noarch | freebsd-kernel | < 11.1_10 | UNKNOWN |
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
31.1%