#VU34339 Out-of-bounds write in Google Android - CVE-2020-0213

Vulnerability identifier: #VU34339

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-0213

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

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

Vendor: Google

Description

The vulnerability allows a remote attacker to execute arbitrary code on the system.

The vulnerability exists due to a boundary error within the hevcd_fmt_conv_420sp_to_420sp_av8() function in ihevcd_fmt_conv_420sp_to_420sp.s in libhevc when performing SIMD fomrat conversion for width less than 32. A remote attacker can pass specially crafted data to the application, trigger an out-of-bounds write due to a heap buffer overflow and execute arbitrary code on the device.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Google Android: 10 - 11

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External links
https://source.android.com/security/bulletin/pixel/2020-06-01
https://source.android.com/security/bulletin/2020-10-01
https://android.googlesource.com/platform/external/libhevc/+/75db1b8e484ffd9256c553cb28dcd0b5d7a3c274

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.