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.
References
Link | Resource |
---|---|
https://gist.github.com/jwang-a/cb4b6e9551457aa299066076b836a2cd | 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://github.com/unicorn-engine/unicorn/compare/2.0.0-rc4...2.0.0-rc5 | Patch Third Party Advisory |
https://www.unicorn-engine.org/changelog/ | Vendor Advisory |
Configurations
Configuration 1 (hide)
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History
No history.
Information
Published : 2021-12-26 05:15
Updated : 2024-02-28 18:48
NVD link : CVE-2021-44078
Mitre link : CVE-2021-44078
CVE.ORG link : CVE-2021-44078
JSON object : View
Products Affected
unicorn-engine
- unicorn_engine
CWE
CWE-697
Incorrect Comparison