CVE-2020-0421

In appendFormatV of String8.cpp, there is a possible out of bounds write due to incorrect error handling. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-8.1 Android-9 Android-10 Android-11 Android-8.0Android ID: A-161894517

Affected

Android

CVSS v3.1 NVD

7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 NVD

7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS

0.27% chance of exploitation in the next 30 days, 17th percentile

Published

2020-10-14

Updated

2024-08-04

Proof-of-concept exploits (1)

• nanopathi/system_core_AOSP10_r33_CVE-2020-04210★ · 2022-03-31

Security advisories

• https://source.android.com/security/bulletin/2020-10-01

References

• CVE Record
• NVD entry

Related

• CVE-2020-0160
• CVE-2020-0183
• CVE-2020-0225
• CVE-2020-0241
• CVE-2020-0409
• CVE-2020-0451