CVE-2019-2111 - Use After Free

Severity

75%

Complexity

99%

Confidentiality

106%

In loop of DnsTlsSocket.cpp, there is a possible heap memory corruption due to a use after free. This could lead to remote code execution in the netd server with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android-9. Android ID: A-122856181.

In loop of DnsTlsSocket.cpp, there is a possible heap memory corruption due to a use after free. This could lead to remote code execution in the netd server with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android-9. Android ID: A-122856181.

CVSS 3.0 Base Score 9.8. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

CVSS 2.0 Base Score 7.5. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (AV:N/AC:L/Au:N/C:P/I:P/A:P).

Demo Examples

Use After Free

CWE-416

The following example demonstrates the weakness.


               
}
free(buf3R2);

Use After Free

CWE-416

The following code illustrates a use after free error:


               
}
free(ptr);
logError("operation aborted before commit", ptr);

When an error occurs, the pointer is immediately freed. However, this pointer is later incorrectly used in the logError function.

Overview

First reported 5 years ago

2019-07-08 18:15:00

Last updated 5 years ago

2019-07-09 16:39:00

Affected Software

Google Android 9.0

9.0

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