openEuler 20.03 LTS SP1 update for microcode_ctl
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2022-33196 CVE-2022-38090 CVE-2022-40982 |
| CWE-ID | CWE-276 CWE-653 CWE-1342 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
openEuler Operating systems & Components / Operating system microcode_ctl Operating systems & Components / Operating system package or component |
| Vendor | openEuler |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Incorrect default permissions
EUVDB-ID: #VU72456
Risk: Low
CVSSv3.1: 6.3 [CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2022-33196
CWE-ID:
CWE-276 - Incorrect Default Permissions
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect default permissions for memory controller configurations for some Intel Xeon processors when using Intel Software Guard Extensions. A local user escalate privileges on the system.
Install updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1
microcode_ctl: before 2.1-41
CPE2.3 External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1548
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) Improper isolation or compartmentalization
EUVDB-ID: #VU72457
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-2022-38090
CWE-ID:
CWE-653 - Improper isolation or compartmentalization
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to improper isolation of shared resources in some Intel processors when using Intel Software Guard Extensions. A local user can gain access to sensitive information.
Install updates from vendor's repository.
Vulnerable software versionsopenEuler: 20.03 LTS SP1
microcode_ctl: before 2.1-41
CPE2.3 External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1548
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 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 versionsopenEuler: 20.03 LTS SP1
microcode_ctl: before 2.1-41
CPE2.3 External linkshttp://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1548
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.
