CVE-2021-44078
CVSS V2 Medium 6.9
CVSS V3 High 8.1
Description
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.
Overview
- CVE ID
- CVE-2021-44078
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2021-12-26T05:15:07
- Last Modified Date
- 2022-01-07T18:29:48
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:unicorn-engine:unicorn_engine:*:*:*:*:*:*:*:* | 1 | OR | 1.0.3 | |
| cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc1:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc2:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc3:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:unicorn-engine:unicorn_engine:2.0.0:rc4:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:M/Au:N/C:C/I:C/A:C
- Access Vector
- LOCAL
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- COMPLETE
- Integrity Impact
- COMPLETE
- Availability Impact
- COMPLETE
- Base Score
- 6.9
- Severity
- MEDIUM
- Exploitability Score
- 3.4
- Impact Score
- 10
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- Attack Vector
- LOCAL
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 1.4
- Impact Score
- 6
References
| Reference URL | Reference Tags |
|---|---|
| https://gist.github.com/jwang-a/cb4b6e9551457aa299066076b836a2cd | Third Party Advisory |
| https://github.com/unicorn-engine/unicorn/compare/2.0.0-rc4...2.0.0-rc5 | Patch Third Party Advisory |
| https://github.com/jwang-a/CTF/blob/master/MyChallenges/Pwn/Unicorns_Aisle/UnicornsAisle.pdf | Third Party Advisory |
| https://github.com/unicorn-engine/unicorn/commit/c733bbada356b0373fa8aa72c044574bb855fd24 | Patch Third Party Advisory |
| https://www.unicorn-engine.org/changelog/ | Vendor Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-44078 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44078 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 06:38:03 | Added to TrackCVE | |||
| 2022-12-06 05:07:48 | 2021-12-26T05:15Z | 2021-12-26T05:15:07 | CVE Published Date | updated |
| 2022-12-06 05:07:48 | 2022-01-07T18:29:48 | CVE Modified Date | updated | |
| 2022-12-06 05:07:48 | Analyzed | Vulnerability Status | updated |