Amazon Linux AMI update for microcode_ctl, kernel



Published: 2019-11-16
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-11135
CVE-2019-11139
CWE-ID CWE-399
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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Operating systems & Components / Operating system

Vendor Amazon Web Services

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Resource management error

EUVDB-ID: #VU22704

Risk: Low

CVSSv3.1: 5.1 [CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-11135

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition within the TSX Asynchronous Abort (TAA) in Intel CPUs. The TAA condition, on some microprocessors utilizing speculative execution, may allow an authenticated user to potentially enable information disclosure via a side channel.

Mitigation

Update the affected packages:

i686:
    microcode_ctl-debuginfo-2.1-47.36.amzn1.i686
    microcode_ctl-2.1-47.36.amzn1.i686
    kernel-tools-debuginfo-4.14.152-98.182.amzn1.i686
    kernel-debuginfo-4.14.152-98.182.amzn1.i686
    perf-debuginfo-4.14.152-98.182.amzn1.i686
    kernel-tools-4.14.152-98.182.amzn1.i686
    kernel-devel-4.14.152-98.182.amzn1.i686
    kernel-headers-4.14.152-98.182.amzn1.i686
    kernel-debuginfo-common-i686-4.14.152-98.182.amzn1.i686
    perf-4.14.152-98.182.amzn1.i686
    kernel-4.14.152-98.182.amzn1.i686
    kernel-tools-devel-4.14.152-98.182.amzn1.i686

src:
    microcode_ctl-2.1-47.36.amzn1.src
    kernel-4.14.152-98.182.amzn1.src

x86_64:
    microcode_ctl-debuginfo-2.1-47.36.amzn1.x86_64
    microcode_ctl-2.1-47.36.amzn1.x86_64
    perf-debuginfo-4.14.152-98.182.amzn1.x86_64
    perf-4.14.152-98.182.amzn1.x86_64
    kernel-tools-debuginfo-4.14.152-98.182.amzn1.x86_64
    kernel-devel-4.14.152-98.182.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.152-98.182.amzn1.x86_64
    kernel-tools-4.14.152-98.182.amzn1.x86_64
    kernel-4.14.152-98.182.amzn1.x86_64
    kernel-tools-devel-4.14.152-98.182.amzn1.x86_64
    kernel-debuginfo-4.14.152-98.182.amzn1.x86_64
    kernel-headers-4.14.152-98.182.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2019-1318.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) Resource management error

EUVDB-ID: #VU22782

Risk: Low

CVSSv3.1: 5.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11139

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to improper conditions check in the voltage modulation interface for some Intel(R) Xeon(R) Scalable Processors. A local user can perform a denial of service attack.

The following Intel Xeon Scalable Processors are affected:

  • Intel Xeon Platinum Processors: 8153, 8156, 8158, 8160, 8160F, 8160M, 8160T, 8164, 8168, 8170, 8170M, 8176, 8176F, 8176M, 8180, 8180M
  • Intel Xeon Gold Processors: 5115, 5118, 5119T, 5120, 5120T, 5122, 6126, 6126F, 6126T, 6128, 6130, 6130F, 6130T, 6132, 6134, 6134M, 6136, 6138, 6138F, 6138T, 6140, 6140M, 6142, 6142F, 6142M, 6144, 6146, 6148, 6148F, 6150, 6152, 6154
  • Intel Xeon Silver Processors: 4108, 4109T, 4110, 4112, 4114, 4114T, 4116, 4116T
  • Intel Xeon Bronze Processors: 3104, 3106

Mitigation

Update the affected packages:

i686:
    microcode_ctl-debuginfo-2.1-47.36.amzn1.i686
    microcode_ctl-2.1-47.36.amzn1.i686
    kernel-tools-debuginfo-4.14.152-98.182.amzn1.i686
    kernel-debuginfo-4.14.152-98.182.amzn1.i686
    perf-debuginfo-4.14.152-98.182.amzn1.i686
    kernel-tools-4.14.152-98.182.amzn1.i686
    kernel-devel-4.14.152-98.182.amzn1.i686
    kernel-headers-4.14.152-98.182.amzn1.i686
    kernel-debuginfo-common-i686-4.14.152-98.182.amzn1.i686
    perf-4.14.152-98.182.amzn1.i686
    kernel-4.14.152-98.182.amzn1.i686
    kernel-tools-devel-4.14.152-98.182.amzn1.i686

src:
    microcode_ctl-2.1-47.36.amzn1.src
    kernel-4.14.152-98.182.amzn1.src

x86_64:
    microcode_ctl-debuginfo-2.1-47.36.amzn1.x86_64
    microcode_ctl-2.1-47.36.amzn1.x86_64
    perf-debuginfo-4.14.152-98.182.amzn1.x86_64
    perf-4.14.152-98.182.amzn1.x86_64
    kernel-tools-debuginfo-4.14.152-98.182.amzn1.x86_64
    kernel-devel-4.14.152-98.182.amzn1.x86_64
    kernel-debuginfo-common-x86_64-4.14.152-98.182.amzn1.x86_64
    kernel-tools-4.14.152-98.182.amzn1.x86_64
    kernel-4.14.152-98.182.amzn1.x86_64
    kernel-tools-devel-4.14.152-98.182.amzn1.x86_64
    kernel-debuginfo-4.14.152-98.182.amzn1.x86_64
    kernel-headers-4.14.152-98.182.amzn1.x86_64

Vulnerable software versions

Amazon Linux AMI: All versions

External links

http://alas.aws.amazon.com/ALAS-2019-1318.html


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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