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
2.1 Low
CVSS2
Access Vector
LOCAL
Access 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
0.001 Low
EPSS
Percentile
18.0%
Issue Overview:
A new domain bypass transient execution attack known as Special Register Buffer Data Sampling (SRBDS) has been found. This flaw allows data values from special internal registers to be leaked by an attacker able to execute code on any core of the CPU. An unprivileged, local attacker can use this flaw to infer values returned by affected instructions known to be commonly used during cryptographic operations that rely on uniqueness, secrecy, or both. Incomplete cleanup from specific special register read operations in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-0543)
Cleanup errors in some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-0548)
Cleanup errors in some data cache evictions for some Intel® Processors may allow an authenticated user to potentially enable information disclosure via local access. (CVE-2020-0549)
Affected Packages:
microcode_ctl
Issue Correction:
Run yum update microcode_ctl to update your system.
New Packages:
i686:
microcode_ctl-2.1-47.39.amzn1.i686
microcode_ctl-debuginfo-2.1-47.39.amzn1.i686
src:
microcode_ctl-2.1-47.39.amzn1.src
x86_64:
microcode_ctl-debuginfo-2.1-47.39.amzn1.x86_64
microcode_ctl-2.1-47.39.amzn1.x86_64
Red Hat: CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
Mitre: CVE-2020-0543, CVE-2020-0548, CVE-2020-0549
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 1 | i686 | microcode_ctl | < 2.1-47.39.amzn1 | microcode_ctl-2.1-47.39.amzn1.i686.rpm |
Amazon Linux | 1 | i686 | microcode_ctl-debuginfo | < 2.1-47.39.amzn1 | microcode_ctl-debuginfo-2.1-47.39.amzn1.i686.rpm |
Amazon Linux | 1 | x86_64 | microcode_ctl-debuginfo | < 2.1-47.39.amzn1 | microcode_ctl-debuginfo-2.1-47.39.amzn1.x86_64.rpm |
Amazon Linux | 1 | x86_64 | microcode_ctl | < 2.1-47.39.amzn1 | microcode_ctl-2.1-47.39.amzn1.x86_64.rpm |
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
2.1 Low
CVSS2
Access Vector
LOCAL
Access 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
0.001 Low
EPSS
Percentile
18.0%