Yukihiro "Matz" Matsumoto

32 exploits Active since Jun 2017
CVE-2017-9527 WRITEUP HIGH WRITEUP
mruby < 1.2.0 - Use-After-Free in GC Mark Context Stack
The mark_context_stack function in gc.c in mruby through 1.2.0 allows attackers to cause a denial of service (heap-based use-after-free and application crash) or possibly have unspecified other impact via a crafted .rb file.
CVSS 7.8
CVE-2018-10191 WRITEUP CRITICAL WRITEUP
mruby <= 1.4.0 - Use-After-Free via Deep Scope Nesting in OP_GETUPVAR
In versions of mruby up to and including 1.4.0, an integer overflow exists in src/vm.c::mrb_vm_exec() when handling OP_GETUPVAR in the presence of deep scope nesting, resulting in a use-after-free. An attacker that can cause Ruby code to be run can use this to possibly execute arbitrary code.
CVSS 9.8
CVE-2018-10199 WRITEUP CRITICAL WRITEUP
mruby <= 1.4.0 - Use-After-Free in File#initialize_copy
In versions of mruby up to and including 1.4.0, a use-after-free vulnerability exists in src/io.c::File#initilialize_copy(). An attacker that can cause Ruby code to be run can possibly use this to execute arbitrary code.
CVSS 9.8
CVE-2018-11743 WRITEUP CRITICAL WRITEUP
mruby 1.4.1 - Use-After-Free in init_copy Function
The init_copy function in kernel.c in mruby 1.4.1 makes initialize_copy calls for TT_ICLASS objects, which allows attackers to cause a denial of service (mrb_hash_keys uninitialized pointer and application crash) or possibly have unspecified other impact.
CVSS 9.8
CVE-2018-12247 WRITEUP HIGH WRITEUP
mruby 1.4.1 - NULL Pointer Dereference via .clone Usage
An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class, related to certain .clone usage, because mrb_obj_clone in kernel.c copies flags other than the MRB_FLAG_IS_FROZEN flag (e.g., the embedded flag).
CVSS 7.5
CVE-2018-12248 WRITEUP HIGH WRITEUP
mruby 1.4.1 - Heap-Based Buffer Over-Read in Fiber Stack Handling
An issue was discovered in mruby 1.4.1. There is a heap-based buffer over-read associated with OP_ENTER because mrbgems/mruby-fiber/src/fiber.c does not extend the stack in cases of many arguments to fiber.
CVSS 7.5
CVE-2018-12249 WRITEUP HIGH WRITEUP
mruby 1.4.1 - NULL Pointer Dereference in mrb_class_real
An issue was discovered in mruby 1.4.1. There is a NULL pointer dereference in mrb_class_real because "class BasicObject" is not properly supported in class.c.
CVSS 7.5
CVE-2020-36401 WRITEUP HIGH WRITEUP
mruby 2.1.2 - Use-After-Free in mrb_default_allocf
mruby 2.1.2 has a double free in mrb_default_allocf (called from mrb_free and obj_free).
CVSS 7.8
CVE-2021-4110 WRITEUP HIGH WRITEUP
mruby < 3.1 - NULL Pointer Dereference
mruby is vulnerable to NULL Pointer Dereference
CVSS 7.5
CVE-2021-4188 WRITEUP HIGH WRITEUP
mruby < 3.0.0 - NULL Pointer Dereference
mruby is vulnerable to NULL Pointer Dereference
CVSS 7.5
CVE-2022-0240 WRITEUP HIGH WRITEUP
mruby < 3.2 - NULL Pointer Dereference
mruby is vulnerable to NULL Pointer Dereference
CVSS 7.5
CVE-2022-0326 WRITEUP MEDIUM WRITEUP
Homebrew mruby <3.2 - Buffer Overflow
NULL Pointer Dereference in Homebrew mruby prior to 3.2.
CVSS 5.5
CVE-2022-0481 WRITEUP HIGH WRITEUP
Homebrew mruby <3.2 - Null Pointer Dereference
NULL Pointer Dereference in Homebrew mruby prior to 3.2.
CVSS 7.5
CVE-2022-0525 WRITEUP CRITICAL WRITEUP
Homebrew mruby <3.2 - Info Disclosure
Out-of-bounds Read in Homebrew mruby prior to 3.2.
CVSS 9.1
CVE-2022-0570 WRITEUP CRITICAL WRITEUP
Homebrew mruby <3.2 - Buffer Overflow
Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.
CVSS 9.8
CVE-2022-0614 WRITEUP MEDIUM WRITEUP
Homebrew mruby <3.2 - Buffer Overflow
Use of Out-of-range Pointer Offset in Homebrew mruby prior to 3.2.
CVSS 5.5
CVE-2022-0623 WRITEUP CRITICAL WRITEUP
Homebrew mruby <3.2 - Info Disclosure
Out-of-bounds Read in Homebrew mruby prior to 3.2.
CVSS 9.1
CVE-2022-0630 WRITEUP HIGH WRITEUP
Homebrew mruby <3.2 - Info Disclosure
Out-of-bounds Read in Homebrew mruby prior to 3.2.
CVSS 7.1
CVE-2022-0631 WRITEUP CRITICAL WRITEUP
Homebrew mruby <3.2 - Buffer Overflow
Heap-based Buffer Overflow in Homebrew mruby prior to 3.2.
CVSS 9.8
CVE-2022-0632 WRITEUP MEDIUM WRITEUP
Homebrew mruby <3.2 - NULL Pointer Dereference
NULL Pointer Dereference in Homebrew mruby prior to 3.2.
CVSS 5.5
CVE-2022-0717 WRITEUP CRITICAL WRITEUP
mruby < 3.1 - Out-of-bounds Read
Out-of-bounds Read in GitHub repository mruby/mruby prior to 3.2.
CVSS 9.1
CVE-2022-0890 WRITEUP MEDIUM WRITEUP
mruby < 3.2 - NULL Pointer Dereference
NULL Pointer Dereference in GitHub repository mruby/mruby prior to 3.2.
CVSS 5.5
CVE-2022-1071 WRITEUP HIGH WRITEUP
mruby < 3.1 - Use-After-Free in mrb_vm_exec
User after free in mrb_vm_exec in GitHub repository mruby/mruby prior to 3.2.
CVSS 8.2
CVE-2022-1106 WRITEUP CRITICAL WRITEUP
mruby < 3.1 - Use-After-Free in mrb_vm_exec
use after free in mrb_vm_exec in GitHub repository mruby/mruby prior to 3.2.
CVSS 9.1
CVE-2022-1201 WRITEUP MEDIUM WRITEUP
mruby < 3.2 - NULL Pointer Dereference in mrb_vm_exec
NULL Pointer Dereference in mrb_vm_exec with super in GitHub repository mruby/mruby prior to 3.2. This vulnerability is capable of making the mruby interpreter crash, thus affecting the availability of the system.
CVSS 6.5