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CVE-2024-56141— Minosoft has IV equal to key

Quick assessment

Affected
Bixilon Minosoft
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Moritz Zwerger Minosoft是德国Moritz Zwerger个人开发者开源的一款连接客户端与Minecraft服务器的软件。 Moritz Zwerger Minosoft存在加密问题漏洞，该漏洞源于在初始化 AES 密码时，使用的初始化向量（IV）与密钥相同，而非使用具有足够随机性的值。

CVSS 5.0 · Medium EPSS 0.16% · P4

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
Bixilon Minosoft >= f1ae30e2b046a490026a8413b075685deb795122 affected
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I. Basic Information for CVE-2024-56141

Vulnerability Information
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Vulnerability Title
Minosoft has IV equal to key
Source: CVE Program / CVE List V5
Vulnerability Description
Minosoft is an open-source, multi-version Minecraft Java Edition client written in Kotlin. Starting in commit f1ae30e2b046a490026a8413b075685deb795122, the CryptManager  encryption routine ( CryptManager.kt ) initializes its AES cipher using an initialization vector (IV) that is set equal to the secret key rather than to a sufficiently random value. Because the IV is not random and is derived directly from the key, the encryption is vulnerable to chosen-ciphertext/chosen-plaintext attacks: an attacker who can submit specific messages for encryption can recover the secret key. This affects all versions supporting Minecraft protocol 1.7 and later. No patched version is available, and no known workarounds are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在CBC加密模式中未使用随机化IV向量
Source: CVE Program / CVE List V5
Vulnerability Title
Moritz Zwerger Minosoft 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Moritz Zwerger Minosoft是德国Moritz Zwerger个人开发者开源的一款连接客户端与Minecraft服务器的软件。 Moritz Zwerger Minosoft存在加密问题漏洞，该漏洞源于在初始化 AES 密码时，使用的初始化向量（IV）与密钥相同，而非使用具有足够随机性的值。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Bixilon Minosoft >= f1ae30e2b046a490026a8413b075685deb795122 -

II. Public POCs for CVE-2024-56141

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2024-56141

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Patches & Fixes for CVE-2024-56141 (1)

Vendor Advisories for CVE-2024-56141 (1)

IV. Related Vulnerabilities

Same weakness: CWE-329

V. Comments for CVE-2024-56141

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