#VU65115 Out-of-bounds read in Pixel - CVE-2021-39724

Vulnerability identifier: #VU65115

Vulnerability risk: Medium

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-39724

CWE-ID: CWE-125

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Pixel
Mobile applications / Mobile firmware & hardware

Vendor: Google

Description

The vulnerability allows a local application to gain access to potentially sensitive information.

The vulnerability exists due to a missing bounds check in TuningProviderBase::GetTuningTreeSet() function of tuning_provider_base.cc when processing files. A local application with system privileges can trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Pixel: before 2022-03-05

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External links
https://source.android.com/security/bulletin/pixel/2022-03-01

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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.