Ubuntu update for intel-microcode



Risk Low
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2017-5715
CVE-2020-24489
CVE-2020-24511
CVE-2020-24512
CVE-2020-24513
CWE-ID CWE-200
CWE-459
CWE-203
Exploitation vector Local
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
Ubuntu
Operating systems & Components / Operating system

intel-microcode (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Information disclosure

EUVDB-ID: #VU9883

Risk: Low

CVSSv4.0: 5.4 [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:P/U:Clear]

CVE-ID: CVE-2017-5715

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

Exploit availability: Yes

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists in Intel CPU hardware due to improper implementation of the speculative execution of instructions. A local attacker can utilize branch target injection, execute arbitrary code, perform a side-channel attack and read sensitive memory information.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 21.04

intel-microcode (Ubuntu package): before 3.20210608.0u buntu0.20.04.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4985-1


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. However, proof of concept for this vulnerability is available.

2) Incomplete cleanup

EUVDB-ID: #VU54191

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-24489

CWE-ID: CWE-459 - Incomplete cleanup

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incomplete cleanup, which leads to security restrictions bypass and privilege escalation.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 21.04

intel-microcode (Ubuntu package): before 3.20210608.0u buntu0.20.04.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4985-1


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: #VU54203

Risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-24511

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 improper isolation of shared resources. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 21.04

intel-microcode (Ubuntu package): before 3.20210608.0u buntu0.20.04.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4985-1


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.

4) Observable discrepancy

EUVDB-ID: #VU54204

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-2020-24512

CWE-ID: CWE-203 - Observable discrepancy

Exploit availability: No

Description

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

The vulnerability exists due to observable timing discrepancy. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 21.04

intel-microcode (Ubuntu package): before 3.20210608.0u buntu0.20.04.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4985-1


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.

5) Information disclosure

EUVDB-ID: #VU54220

Risk: Low

CVSSv4.0: 1.9 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-24513

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

Exploit availability: No

Description

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

The vulnerability exists due to domain-bypass transient execution issue. A local user can gain unauthorized access to sensitive information on the system.

Mitigation

Update the affected package intel-microcode to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 21.04

intel-microcode (Ubuntu package): before 3.20210608.0u buntu0.20.04.1

CPE2.3 External links

https://ubuntu.com/security/notices/USN-4985-1


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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