CVEvulnerability

CVE-2021-44078

8.1 HIGH Published 2021-12-26 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-12-26
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 2.0 ([email protected])
6.9 MEDIUM — AV:L/AC:M/Au:N/C:C/I:C/A:C
Weaknesses
CWE-697

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.

Affected configurations

• unicorn-engine unicorn engine (<= 1.0.3) • unicorn-engine unicorn engine 2.0.0

Related

Weakness · CWE (1)

  • CWE-697 Incorrect Comparison weakness

References