CVE-2020-3914 - Missing Release of Memory after Effective Lifetime

Severity

55%

Complexity

18%

Confidentiality

60%

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina 10.15.4, tvOS 13.4, watchOS 6.2. An application may be able to read restricted memory.

A memory initialization issue was addressed with improved memory handling. This issue is fixed in iOS 13.4 and iPadOS 13.4, macOS Catalina 10.15.4, tvOS 13.4, watchOS 6.2. An application may be able to read restricted memory.

CVSS 3.1 Base Score 5.5. CVSS Attack Vector: local. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N).

CVSS 2.0 Base Score 4.3. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N).

Demo Examples

Missing Release of Memory after Effective Lifetime

CWE-401

The following C function leaks a block of allocated memory if the call to read() does not return the expected number of bytes:


               
}

                     
return buf;
return NULL;

                           
return NULL;

Overview

First reported 4 years ago

2020-04-01 18:15:00

Last updated 4 years ago

2020-04-02 20:26:00

Affected Software

Apple Mac OS X

References

https://support.apple.com/HT211100

Vendor Advisory

https://support.apple.com/HT211101

Vendor Advisory

https://support.apple.com/HT211102

Vendor Advisory

https://support.apple.com/HT211103

Vendor Advisory

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