CVE-2021-0473 - Double Free

Severity

88%

Complexity

27%

Confidentiality

98%

In rw_t3t_process_error of rw_t3t.cc, there is a possible double free due to uninitialized data. This could lead to remote code execution over NFC with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-9 Android-10 Android-11 Android-8.1Android ID: A-179687208

CVSS 3.1 Base Score 8.8. CVSS Attack Vector: adjacent_network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 8.3. CVSS Attack Vector: adjacent_network. CVSS Attack Complexity: low. CVSS Vector: (AV:A/AC:L/Au:N/C:C/I:C/A:C).

Demo Examples

Double Free

CWE-415

Double Free

CWE-415

While contrived, this code should be exploitable on Linux distributions which do not ship with heap-chunk check summing turned on.


               
}
free(buf1R2);

Overview

Type

Google Android

First reported 3 years ago

2021-06-11 17:15:00

Last updated 3 years ago

2021-06-14 16:22:00

Affected Software

Google Android 8.1

8.1

Google Android 9.0

9.0

Google Android 10.0

10.0

References

https://source.android.com/security/bulletin/2021-05-01

https://source.android.com/security/bulletin/2021-05-01

Patch, Vendor Advisory

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