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
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
AI Score
Confidence
High
EPSS
Percentile
19.4%
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. (CVE-2020-0543)
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-2020-0548)
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
Note:
This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.
Issue Correction:
Run yum update microcode_ctl to update your system.
New Packages:
i686:
microcode_ctl-2.1-47.amzn2.0.7.i686
microcode_ctl-debuginfo-2.1-47.amzn2.0.7.i686
src:
microcode_ctl-2.1-47.amzn2.0.7.src
x86_64:
microcode_ctl-2.1-47.amzn2.0.7.x86_64
microcode_ctl-debuginfo-2.1-47.amzn2.0.7.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 | 2 | i686 | microcode_ctl | < 2.1-47.amzn2.0.7 | microcode_ctl-2.1-47.amzn2.0.7.i686.rpm |
Amazon Linux | 2 | i686 | microcode_ctl-debuginfo | < 2.1-47.amzn2.0.7 | microcode_ctl-debuginfo-2.1-47.amzn2.0.7.i686.rpm |
Amazon Linux | 2 | x86_64 | microcode_ctl | < 2.1-47.amzn2.0.7 | microcode_ctl-2.1-47.amzn2.0.7.x86_64.rpm |
Amazon Linux | 2 | x86_64 | microcode_ctl-debuginfo | < 2.1-47.amzn2.0.7 | microcode_ctl-debuginfo-2.1-47.amzn2.0.7.x86_64.rpm |
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
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
AI Score
Confidence
High
EPSS
Percentile
19.4%