Fedora 37 update for microcode_ctl
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2022-21216 CVE-2022-40982 CVE-2022-41804 CVE-2023-23908 |
| CWE-ID | CWE-284 CWE-1342 CWE-1334 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Fedora Operating systems & Components / Operating system microcode_ctl Operating systems & Components / Operating system package or component |
| Vendor | Fedoraproject |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Improper access control
EUVDB-ID: #VU72448
Risk: Low
CVSSv3.1: 6.5 [CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-21216
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions in out-of-band management in Intel processors. A remote privileged user on the local network can bypass implemented security restrictions and gain unauthorized access to the application.
MitigationInstall updates from vendor's repository.
Vulnerable software versionsFedora: 37
microcode_ctl: before 2.1-53.2.fc37
External linkshttp://bodhi.fedoraproject.org/updates/FEDORA-2023-10d34be85a
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Information exposure through microarchitectural state after transient execution
EUVDB-ID: #VU79262
Risk: Medium
CVSSv3.1: 7.6 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-40982
CWE-ID:
CWE-1342 - Information Exposure through Microarchitectural State after Transient Execution
Exploit availability: No
DescriptionThe vulnerability allows a malicious guest to escalate privileges on the system.
The vulnerability exists due to the way data is shared between threads whereby the AVX GATHER instructions on Intel processors can forward the content of stale vector registers to dependent instructions. A malicious guest can infer data from different contexts on the same core and execute arbitrary code with elevated privileges.
Install updates from vendor's repository.
Vulnerable software versionsFedora: 37
microcode_ctl: before 2.1-53.2.fc37
External linkshttp://bodhi.fedoraproject.org/updates/FEDORA-2023-10d34be85a
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Unauthorized error injection
EUVDB-ID: #VU79378
Risk: Low
CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-41804
CWE-ID:
CWE-1334 - Unauthorized Error Injection Can Degrade Hardware Redundancy
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to unauthorized error injection in some Intel Xeon Processors with Intel Software Guard Extensions (SGX). A local user can execute arbitrary code with elevated privileges.
Install updates from vendor's repository.
Vulnerable software versionsFedora: 37
microcode_ctl: before 2.1-53.2.fc37
External linkshttp://bodhi.fedoraproject.org/updates/FEDORA-2023-10d34be85a
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) Improper access control
EUVDB-ID: #VU79377
Risk: Low
CVSSv3.1: 5.2 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-23908
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper access restrictions. A local privileged user can gain access to sensitive information.
Install updates from vendor's repository.
Vulnerable software versionsFedora: 37
microcode_ctl: before 2.1-53.2.fc37
External linkshttp://bodhi.fedoraproject.org/updates/FEDORA-2023-10d34be85a
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.
