PT-2022-11078 · Google · Android

Published 2022-04-01 · Updated 2023-08-08 · CVE-2021-39805

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

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

Description The issue is related to a possible out of bounds read in the l2cble process sig cmd function of l2c ble.cc due to a missing bounds check. This could lead to remote information disclosure through Bluetooth with no additional execution privileges needed. User interaction is not needed for exploitation.

Recommendations For Android versions Android-12 through Android-12L, consider restricting Bluetooth connectivity until a patch is available to prevent potential remote information disclosure. As a temporary workaround, disabling Bluetooth when not in use may minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ASB-A-212694559

CVE-2021-39805

Affected Products

Android

References · 6

• https://osv.dev/vulnerability/CVE-2021-39805 · Vendor Advisory
• https://source.android.com/security/bulletin/2022-04-01 · Vendor Advisory
• https://osv.dev/vulnerability/ASB-A-212694559 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-39805 · Security Note
• https://t.me/cibsecurity/40630 · Telegram Post
• https://android.googlesource.com/platform/system/bt/+/1e38a411e70f7f9fa6b78e4e75479e818f20e401 · Note