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cveMitreCVE-2021-44078
HistoryDec 26, 2021 - 5:15 a.m.

CVE-2021-44078

2021-12-2605:15:07
CWE-697
mitre
web.nvd.nist.gov
22
cve-2021-44078
unicorn engine
security vulnerability
sandbox escape
virtual memory manager
arbitrary code execution
nvd

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

8.1

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.002

Percentile

54.4%

JSON

An issue was discovered in split_region in uc.c in Unicorn Engine before 2.0.0-rc5. It allows local attackers to escape the sandbox. An attacker must first obtain the ability to execute crafted code in the target sandbox in order to exploit this vulnerability. The specific flaw exists within the virtual memory manager. The issue results from the faulty comparison of GVA and GPA while calling uc_mem_map_ptr to free part of a claimed memory block. An attacker can leverage this vulnerability to escape the sandbox and execute arbitrary code on the host machine.

Affected configurations

Nvd
Node
unicorn-engineunicorn_engineRange≤1.0.3
OR
unicorn-engineunicorn_engineMatch2.0.0rc1
OR
unicorn-engineunicorn_engineMatch2.0.0rc2
OR
unicorn-engineunicorn_engineMatch2.0.0rc3
OR
unicorn-engineunicorn_engineMatch2.0.0rc4
VendorProductVersionCPE
unicorn-engineunicorn_engine*cpe:2.3:a:unicorn-engine:unicorn_engine:*:*:*:*:*:*:*:*
unicorn-engineunicorn_engine2.0.0cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc1:*:*:*:*:*:*
unicorn-engineunicorn_engine2.0.0cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc2:*:*:*:*:*:*
unicorn-engineunicorn_engine2.0.0cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc3:*:*:*:*:*:*
unicorn-engineunicorn_engine2.0.0cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc4:*:*:*:*:*:*

Related

cvelist 1
prion 1
nvd 1
osv 2
freebsd 1
nessus 1
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2021-12-26 05:15:00
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freebsd
freebsd
py39-unicorn -- sandbox escape and arbitrary code execution vulnerability
2021-12-26 00:00:00
nessus
nessus
FreeBSD : py39-unicorn -- sandbox escape and arbitrary code execution vulnerability (17083017-d993-43eb-8aaf-7138f4486d1c)
2023-04-14 00:00:00

CVSS2

6.9

Attack Vector

LOCAL

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

8.1

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.002

Percentile

54.4%

JSON
Related for CVE-2021-44078
cvelist1prion1nvd1osv2freebsd1nessus1