#VU74690 Race condition in Pixel - CVE-2022-20567

Vulnerability identifier: #VU74690

Vulnerability 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-2022-20567

CWE-ID: CWE-362

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Pixel
Mobile applications / Mobile firmware & hardware

Vendor: Google

Description

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

The vulnerability exists due to a race condition within the pppol2tp_create() function in l2tp_ppp.c. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.

Mitigation
Install security update from vendor's website.

Vulnerable software versions

Pixel: before 2022-12-05

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External links
https://android.googlesource.com/kernel/common/+/d02ba2a6110c5
https://source.android.com/docs/security/bulletin/pixel/2022-12-01

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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.