[Veronica] Scheduled Sequence Processed

[minhyuk]

Security Vulnerabilities in Repository

Summary

The following vulnerabilities have been identified across multiple files in the repository. These issues could potentially lead to security exploits such as memory leaks, buffer overflows, and uninitialized variable use.

Detailed Vulnerabilities

From bss.c

1. Unchecked malloc Return Value

   • Vulnerability: Memory Leak
   • Variable: buf
   • Function: l2dos
   • Description: The malloc function call for allocating memory for the buf variable does not check if the allocation was successful. If the allocation fails, a NULL pointer is dereferenced, leading to a segmentation fault.

2. Uninitialized Variable

   • Vulnerability: Uninitialized Variable
   • Variable: id
   • Function: l2dos
   • Description: The variable id is used uninitialized in the function l2dos. It is used to print the identifier value, but its initial value is not set.

3. Magic Numbers

   • Vulnerability: Code Maintainability
   • Function: l2dos
   • Description: The code uses several magic numbers without any explanation, which makes the code hard to understand and maintain.

4. Insecure Foley Functions

   • Vulnerability: Buffer Overflow
   • Function: str2ba
   • Description: The str2ba function does not perform any checks on the input string length, which can lead to a buffer overflow if the string is too long.

5. Missing Error Checking for send Function

   • Vulnerability: Error Handling
   • Function: l2dos
   • Description: The send function call does not check for errors, leading to potential unexpected behavior if the send function fails.

6. Memory Leak

   • Vulnerability: Memory Leak
   • Variable: buf
   • Function: l2dos
   • Description: The buf variable is allocated using malloc, but it is not freed at the end of the function, which can lead to a memory leak if the function is called multiple times.

7. Resource Leak

   • Vulnerability: Resource Leak
   • Variable: sock
   • Function: l2dos
   • Description: The socket is opened using the socket function but is not closed at the end of the function, leading to a resource leak if the function is called multiple times.

8. Missing Validation for Returned Pointers

   • Vulnerability: NULL Pointer Dereference
   • Function: code2define
   • Description: The code2define function returns a pointer to a string but does not check for NULL before being used.

9. Missing Validation for User Input

   • Vulnerability: Unvalidated User Input
   • Variables: cmdnum, siz, pad
   • Function: l2dos
   • Description: The function l2dos takes user input without any validation, which can lead to unexpected behavior or crashes if input values are invalid.

10. Insecure Error Handling

    • Vulnerability: Information Disclosure
    • Function: l2dos
    • Description: The error handling in the function can disclose sensitive information by printing error messages to the console.

From replay_packet/replay_l2cap_packet.c

1. Command Line Argument Vulnerability

   • Vulnerability: Unvalidated User Input
   • Function: main
   • Variable: argv[1]
   • Description: Lack of validation on command line arguments could lead to a buffer overflow vulnerability in the str2ba function.

2. Missing Error Handling

   • Vulnerability: Unhandled Errors
   • Function: send
   • Variable: sent
   • Description: The send function is not properly checked for errors.

3. Hardcoded Buffer Size

   • Vulnerability: Buffer Overflow
   • Function: main
   • Variable: replay_buggy_packet
   • Description: Lack of size checking on this buffer could lead to a buffer overflow vulnerability.

4. Lack of Input Validation

   • Vulnerability: Unvalidated Input
   • Function: str2ba
   • Variable: argv[1]
   • Description: The str2ba function does not validate its input.

5. Resource Leak

   • Vulnerability: Resource Leak
   • Function: main
   • Variable: sock
   • Description: The sock is not closed in case of errors, leading to a resource leak.

6. Insecure Print Statements

   • Vulnerability: Information Disclosure
   • Function: main
   • Variable: replay_buggy_packet
   • Description: Program prints the contents of the buffer, which could lead to information disclosure.

From reset_display_KV600i.c

1. Potential Buffer Overflow

   • Vulnerability: Buffer Overflow
   • Variable: buffer
   • Description: Allocation size is not validated which could lead to buffer overflow.

2. Unchecked User Input

   • Vulnerability: Unchecked User Input
   • Variable: argv[1]
   • Description: No validation of user input in str2ba function.

3. Potential Memory Leak

   • Vulnerability: Memory Leak
   • Variable: buffer
   • Description: In case of error, buffer is not freed.

4. Unchecked Return Value

   • Vulnerability: Unchecked Return Value
   • Function: send
   • Description: Size of bytes sent is not checked for equality with requested size.

5. Hardcoded Value

   • Vulnerability: Hardcoded Value
   • Variable: FAKE_SIZE
   • Description: Usage of hardcoded values in the program.

From hcidump-crash.c

1. Potential Buffer Overflow

   • Vulnerability: Buffer Overflow
   • Variable: buffer
   • Description: The buffer variable is allocated without proper size validation leading to potential overflow during memset.

2. Unvalidated User Input

   • Vulnerability: Unvalidated User Input
   • Variable: argv[1]
   • Description: The str2ba function is used without input validation, leading to potential issues if input is malformed.

3. Resource Leak

   • Vulnerability: Resource Leak
   • Variable: buffer
   • Description: Memory allocated for buffer is not freed in case of errors.

4. Unchecked Return Value

   • Vulnerability: Unchecked Return Value
   • Function: send
   • Description: Function return value is not fully checked.

5. Hardcoded Value

   • Vulnerability: Hardcoded Value
   • Variable: FAKE_SIZE
   • Description: Usage of hardcoded values leading to potential unexpected program behavior.