#VU71065 Use-after-free in Google Android - CVE-2023-20928

Vulnerability identifier: #VU71065

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-2023-20928

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Google Android
Operating systems & Components / Operating system

Vendor: Google

Description

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

The vulnerability exists due to a use-after-free error in Binder driver. A local application can trigger a race condition and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Google Android: before 10, 11, 12L, 12, 13, 10

---

External links
https://source.android.com/docs/security/bulletin/2023-01-01#2023-01-05-security-patch-level-vulnerability-details
https://android.googlesource.com/kernel/common/+/201d5f4a3ec1

---

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.