openEuler 22.03 LTS SP1 update for edk2

1) Integer overflow

EUVDB-ID: #VU89083

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-2022-36763

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow within the Tcg2MeasureGptTable() function when reading untrusted input from the disk. A local user can set up a malicious GPT table to trigger an integer overflow and overwrite code from UEFI applications.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS SP1

python3-edk2-devel: before 202011-19

edk2-ovmf: before 202011-19

edk2-help: before 202011-19

edk2-aarch64: before 202011-19

edk2-devel: before 202011-19

edk2-debugsource: before 202011-19

edk2-debuginfo: before 202011-19

edk2: before 202011-19

CPE2.3

• cpe:2.3:o:openeuler:openeuler:22.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:o:openeuler:python3-edk2-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:edk2-ovmf:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:edk2-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:edk2-aarch64:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:edk2-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:edk2-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:edk2-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:o:openeuler:edk2:*:*:*:*:*:openeuler:*:*

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2024-2024

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.