Package Instance

Improper Restriction of Operations within the Bounds of a Memory Buffer
In Netwide Assembler (NASM) rc0, there is a heap-based buffer overflow that will cause a remote denial of service attack, related to a strcpy in paste_tokens in asm/preproc.c, a similar issue to CVE-2017-11111.

Improper Input Validation
In Netwide Assembler (NASM) rc0, there is a "SEGV on unknown address" that will cause a remote denial of service attack, because asm/preproc.c mishandles macro calls that have the wrong number of arguments.

Improper Check for Unusual or Exceptional Conditions
In Netwide Assembler (NASM) rc0, there is an illegal address access in is_mmacro() in asm/preproc.c that will cause a remote denial of service attack, because of a missing check for the relationship between minimum and maximum parameter counts.

NULL Pointer Dereference
In libnasm.a in Netwide Assembler (NASM), asm/pragma.c allows a NULL pointer dereference in process_pragma, search_pragma_list, and nasm_set_limit when "%pragma limit" is mishandled.

Out-of-bounds Read
A buffer over-read exists in the function crc64ib in crc64.c in nasmlib in Netwide Assembler (NASM) rc16. A crafted asm input can cause segmentation faults, leading to denial-of-service.

Divide By Zero
Netwide Assembler (NASM) rc0 has a division-by-zero vulnerability in the expr5 function in asm/eval.c via a malformed input file.

NULL Pointer Dereference
In Netwide Assembler (NASM) rc0, there is an illegal address access in the function paste_tokens() in preproc.c, aka a NULL pointer dereference. It will lead to remote denial of service.

Use After Free
In Netwide Assembler (NASM) rc0, there are multiple heap use after free vulnerabilities in the tool nasm. The related heap is allocated in the token() function and freed in the detoken() function (called by pp_getline()) - it is used again at multiple positions later that could cause multiple damages. For example, it causes a corrupted double-linked list in detoken(), a double free or corruption in delete_Token(), and an out-of-bounds write in detoken(). It has a high possibility to lead to a remote code execution attack.

Improper Restriction of Operations within the Bounds of a Memory Buffer
NASM nasm-2.13.03 nasm- rc15 rc15 contains a memory corruption (crashed) of nasm when handling a crafted file due to function assemble_file(inname, depend_ptr) at asm/nasm.c:482. vulnerability in function assemble_file(inname, depend_ptr) at asm/nasm.c:482. that can result in aborting/crash nasm program. This attack appear to be exploitable via a specially crafted asm file..

Out-of-bounds Read
In Netwide Assembler (NASM) rc0, there is a heap-based buffer over-read that will cause a remote denial of service attack, related to a while loop in paste_tokens in asm/preproc.c.

Use After Free
In Netwide Assembler (NASM) rc0, there is a use-after-free in pp_getline in asm/preproc.c that will cause a remote denial of service attack.

Integer Overflow or Wraparound
Netwide Assembler (NASM) rc0 has an endless while loop in the assemble_file function of asm/nasm.c because of a globallineno integer overflow.

Use After Free
There is a use-after-free at asm/preproc.c (function pp_getline) in Netwide Assembler (NASM) rc16 that will cause a denial of service during a line-number increment attempt.

Use After Free
In Netwide Assembler (NASM) rc0, there is a use-after-free in the pp_list_one_macro function in asm/preproc.c that will cause a remote denial of service attack, related to mishandling of line-syntax errors.

Out-of-bounds Read
In Netwide Assembler (NASM) rc0, there is a heap-based buffer over-read in the function detoken() in asm/preproc.c that will cause a remote denial of service attack.

Use After Free
There is a use-after-free at asm/preproc.c (function pp_getline) in Netwide Assembler (NASM) rc16 that will cause a denial of service during certain finishes tests.

Improper Restriction of Operations within the Bounds of a Memory Buffer
In Netwide Assembler (NASM) rc0, preproc.c allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via a crafted file.

Out-of-bounds Read
Netwide Assembler (NASM) rc15 has a buffer over-read in x86/regflags.c.

Use After Free
In Netwide Assembler (NASM) rc0, there is a use-after-free in do_directive in asm/preproc.c that will cause a remote denial of service attack.

NULL Pointer Dereference
Netwide Assembler (NASM) rc15 has a NULL pointer dereference in the function find_label in asm/labels.c that will lead to a DoS attack.