Back to the previous page

Test Case ID	153250
Bad / Good / Mixed	Bad
Author	IARPA STONESOUP Test and Evaluation team
Associations	Test suite: 102 Application: 6
Added by	Charles Oliveira
Language	C
Type of test case	Source Code
Input string
Expected Output
Instructions	See src/INSTALL file for instructions on how to install.
Submission date	2015-10-06
Description	This test case implements a buffer that is used after it has been free()'d and it's memory allocated to another task. The test case takes a string as input and copies this string into an internal buffer allocated on the heap. For certain inputs (any string starting with an ASCII character with value of 'a' or higher) the buffer is then free()'d and it's memory is re allocated to a pointer to a buffer, which in tern is set to point to the input string. The original buffer is then filled with the input string again, overwriting the pointer if the memory had previously been free()'d. When this pointer is later accessed, if the use after free has occurred, a segfault will occur due to the corrupted memory the pointer references. Metadata - Base program: Tree - Source Taint: ENVIRONMENT_VARIABLE - Data Type: SIMPLE - Data Flow: BASIC - Control Flow: SEQUENCE
File(s)	color.c (23.08 kB) runFifos.py (2.67 kB) service_mon.sh (100 B) C-C416A-CTRE-01-ST01-DT02-DF11-CF20-01.xml (38.35 kB) C-C416A-CTRE-01-ST01-DT02-DF11-CF20-01.yaml (2.85 kB)
Flaw	CWE-416: Use After Free • 7

There are no comments

Have any comments on this test case? Please, .

File Contains:
CWE-416: Use After Free on line(s): 583, 584, 585, 586, 587, 588, 589