8.1

CVE-2021-44078

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Unicorn-engine ≫ Unicorn Engine Version <= 1.0.3
Unicorn-engine ≫ Unicorn Engine Version 2.0.0 Update rc1
Unicorn-engine ≫ Unicorn Engine Version 2.0.0 Update rc2
Unicorn-engine ≫ Unicorn Engine Version 2.0.0 Update rc3
Unicorn-engine ≫ Unicorn Engine Version 2.0.0 Update rc4
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.53% 0.404
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 8.1 1.4 6
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
NIST 6.9 3.4 10
AV:L/AC:M/Au:N/C:C/I:C/A:C
CWE-697 Incorrect Comparison

The product compares two entities in a security-relevant context, but the comparison is incorrect.

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