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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.9 Medium
AI Score
Confidence
Low
0.003 Low
EPSS
Percentile
65.2%
On January 3, 2018, Microsoft released advisories and security updates related to a recently discovered class of hardware vulnerabilities (known as Spectre and Meltdown) that affect AMD, ARM, and Intel CPUs.
On May 21, 2018, Intel announced the Rogue System Registry Read vulnerability. Also a new subclass of speculative execution side channel vulnerabilities known as Speculative Store Bypass (SSB) has been announced.
Malicious users can exploit these vulnerabilities to bypass security restrictions and obtain sensitive information.
Below is a complete list of vulnerabilities:
Technical details
By exploiting vulnerability (1) attacker could then bypass Kernel Address Space Layout Randomization (KASLR) protections. An attacker would have to log on to an affected system. The mitigation for this vulnerability is exclusively through a microcode/firmware update, and there is no additional Microsoft Windows operating system update.
Vulnerability (2) can be exploited via vulnerable code patterns in the operating system (OS) or in applications. In the case of Just-in-Time (JIT) compilers, such as JavaScript JIT employed by web browsers, it may be possible for an attacker to supply JavaScript that produces native code that could give rise to an instance of CVE-2018-3639. However, major browsers have taken steps to increase the difficulty of exploting.
Look at Recommended Actions section in original advisories
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:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.9 Medium
AI Score
Confidence
Low
0.003 Low
EPSS
Percentile
65.2%