PT-2022-10931 · Google · Android

Published 2022-01-01 · Updated 2023-08-08 · CVE-2021-39623

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Android versions Android-9 through Android-12

Description The issue is related to an incorrect bounds check in the doRead function of SimpleDecodingSource.cpp, which could lead to a possible out of bounds write. This might result in remote escalation of privilege without requiring additional execution privileges. User interaction is not necessary for exploitation.

Recommendations For Android versions Android-9 through Android-12, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ASB-A-194105348

CVE-2021-39623

Affected Products

Android

References · 8

• 🔥❌ https://github.com/marcinguy/CVE-2021-39623 · Exploit, Deleted
• https://source.android.com/security/bulletin/2022-01-01 · Vendor Advisory
• https://osv.dev/vulnerability/ASB-A-194105348 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39623 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-39623 · Security Note
• https://android.googlesource.com/platform/frameworks/av/+/5753afcd4c87f5566f4014cce1cbc8d767572331 · Note
• https://t.me/cibsecurity/35592 · Telegram Post
• https://t.me/defcon_news/93268 · Telegram Post