6.9
CVSSv2

CVE-2021-44078

Published: 26/12/2021 Updated: 07/01/2022
CVSS v2 Base Score: 6.9 | Impact Score: 10 | Exploitability Score: 3.4
CVSS v3 Base Score: 8.1 | Impact Score: 6 | Exploitability Score: 1.4
VMScore: 614
Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Vulnerability Summary

An issue exists in split_region in uc.c in Unicorn Engine prior to 2.0.0-rc5. It allows local malicious users 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.

Vulnerability Trend

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unicorn-engine unicorn engine

unicorn-engine unicorn engine 2.0.0