Anolis OS update for edk2



| Updated: 2025-03-28
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-28211
CWE-ID CWE-122
Exploitation vector Local
Public exploit N/A
Vulnerable software
 Anolis OS
Operating systems & Components / Operating system

edk2-ovmf
Operating systems & Components / Operating system package or component

edk2-aarch64
Operating systems & Components / Operating system package or component

Vendor OpenAnolis

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Heap-based buffer overflow

EUVDB-ID: #VU54481

Risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-28211

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the LzmaUefiDecompressGetInfo() function. A local user can run a specially crafted program to trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

edk2-ovmf: before 20200602gitca407c7246bf-4

edk2-aarch64: before 20200602gitca407c7246bf-4

CPE2.3 External links

https://anas.openanolis.cn/errata/detail/ANSA-2021:0032


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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