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MitreCVE-2020-36401

HistoryJul 01, 2021 - 3:15 a.m.

CVE-2020-36401

2021-07-0103:15:07

CWE-415

mitre

web.nvd.nist.gov

mruby

cve-2020-36401

nvd

double free

mrb_default_allocf

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

7.6

Confidence

High

EPSS

0.002

Percentile

52.3%

JSON

mruby 2.1.2 has a double free in mrb_default_allocf (called from mrb_free and obj_free).

Affected configurations

Nvd

Node

mrubymrubyMatch2.1.2

AND

linuxlinux_kernelMatch-

VendorProductVersionCPE
mrubymruby2.1.2cpe:2.3:a:mruby:mruby:2.1.2:*:*:*:*:*:*:*
linuxlinux_kernel-cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
mruby	mruby	2.1.2	cpe:2.3:a:mruby:mruby:2.1.2:::::::*
linux	linux_kernel	-	cpe:2.3:o:linux:linux_kernel:-:::::::*

References

bugs.chromium.org/p/oss-fuzz/issues/detail?id=23801

github.com/google/oss-fuzz-vulns/blob/main/vulns/mruby/OSV-2020-744.yaml

github.com/mruby/mruby/commit/97319697c8f9f6ff27b32589947e1918e3015503

Social References

CVSS2

6.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

AI Score

7.6

Confidence

High

EPSS

0.002

Percentile

52.3%

JSON

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