Ubuntu update for Intel Microcode



Risk Low
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-0543
CVE-2020-0548
CVE-2020-0549
CWE-ID CWE-200
Exploitation vector Local
Public exploit N/A
Vulnerable software
 intel-microcode (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU28928

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-0543

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

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

The vulnerability exists due to incomplete cleanup from specific special register read operations in some Intel(R) Processors. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected packages.

Ubuntu 20.04 LTS
intel-microcode - 3.20200609.0ubuntu0.20.04.0
Ubuntu 19.10
intel-microcode - 3.20200609.0ubuntu0.19.10.0
Ubuntu 18.04 LTS
intel-microcode - 3.20200609.0ubuntu0.18.04.0
Ubuntu 16.04 LTS
intel-microcode - 3.20200609.0ubuntu0.16.04.0
Ubuntu 14.04 ESM
intel-microcode - 3.20200609.0ubuntu0.14.04.0

Vulnerable software versions

intel-microcode (Ubuntu package): 0.20080131-1 - 3.20200520.1

CPE2.3 External links

https://usn.ubuntu.com/4385-1/


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.

2) Information disclosure

EUVDB-ID: #VU24688

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-0548

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

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

The vulnerability exists due to cleanup errors. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected packages.

Ubuntu 20.04 LTS
intel-microcode - 3.20200609.0ubuntu0.20.04.0
Ubuntu 19.10
intel-microcode - 3.20200609.0ubuntu0.19.10.0
Ubuntu 18.04 LTS
intel-microcode - 3.20200609.0ubuntu0.18.04.0
Ubuntu 16.04 LTS
intel-microcode - 3.20200609.0ubuntu0.16.04.0
Ubuntu 14.04 ESM
intel-microcode - 3.20200609.0ubuntu0.14.04.0

Vulnerable software versions

intel-microcode (Ubuntu package): 0.20080131-1 - 3.20200520.1

CPE2.3 External links

https://usn.ubuntu.com/4385-1/


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.

3) Information disclosure

EUVDB-ID: #VU24689

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-0549

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

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

The vulnerability exists due to cleanup errors in some data cache evictions. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected packages.

Ubuntu 20.04 LTS
intel-microcode - 3.20200609.0ubuntu0.20.04.0
Ubuntu 19.10
intel-microcode - 3.20200609.0ubuntu0.19.10.0
Ubuntu 18.04 LTS
intel-microcode - 3.20200609.0ubuntu0.18.04.0
Ubuntu 16.04 LTS
intel-microcode - 3.20200609.0ubuntu0.16.04.0
Ubuntu 14.04 ESM
intel-microcode - 3.20200609.0ubuntu0.14.04.0

Vulnerable software versions

intel-microcode (Ubuntu package): 0.20080131-1 - 3.20200520.1

CPE2.3 External links

https://usn.ubuntu.com/4385-1/


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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