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CVE-2021-25518

Quick assessment

Affected
Samsung Mobile Samsung Mobile Devices
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.

Samsung Ldfw是韩国三星（Samsung）公司的一个可加载固件。 Samsung LDFW 和BL31存在安全漏洞，该漏洞源于LDFW和BL31的安全日志进行了不正确的边界检查，允许攻击者任意写入内存和执行代码。

CVSS 6.4 · Medium EPSS 0.11% · P1
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I. Basic Information for CVE-2021-25518

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An improper boundary check in secure_log of LDFW and BL31 prior to SMR Dec-2021 Release 1 allows arbitrary memory write and code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Samsung Ldfw 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Samsung Ldfw是韩国三星（Samsung）公司的一个可加载固件。 Samsung LDFW 和BL31存在安全漏洞，该漏洞源于LDFW和BL31的安全日志进行了不正确的边界检查，允许攻击者任意写入内存和执行代码。
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
Samsung Mobile Samsung Mobile Devices P(9.0), Q(10.0), R(11.0) devices with selected Exynos chipsets ~ SMR Dec-2021 Release 1 -

II. Public POCs for CVE-2021-25518

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III. Intelligence Information for CVE-2021-25518

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Other References for CVE-2021-25518 (1)

Same Patch Batch · Samsung Mobile · 2021-12-08 · 18 CVEs total

CVE-2021-25517 7.7 HIGH Samsung Ldfw 输入验证错误漏洞
CVE-2021-25516 6.4 MEDIUM Samsung SMR 安全漏洞
CVE-2021-25511 6.3 MEDIUM Samsung SMR 路径遍历漏洞
CVE-2021-25512 6.1 MEDIUM Samsung SMR 输入验证错误漏洞
CVE-2021-25520 5.9 MEDIUM Samsung Internet 跨站脚本漏洞
CVE-2021-25510 5.3 MEDIUM Samsung SMR 输入验证错误漏洞
CVE-2021-25522 5.3 MEDIUM Samsung Smart Capture 安全漏洞
CVE-2021-25519 4.0 MEDIUM Samsung CPLC 安全漏洞
CVE-2021-25515 4.0 MEDIUM Samsung SMR 安全漏洞
CVE-2021-25521 4.0 MEDIUM Samsung Internet 跨站脚本漏洞
CVE-2021-25523 4.0 MEDIUM Samsung Dialer 安全漏洞
CVE-2021-25524 4.0 MEDIUM Samsung Contacts 安全漏洞
CVE-2021-25526 4.0 MEDIUM Samsung Blockchain Wallet 安全漏洞
CVE-2021-25527 3.8 LOW Samsung Pay 安全漏洞
CVE-2021-25514 3.3 LOW Samsung SMR 安全漏洞
CVE-2021-25513 2.4 LOW Samsung SMR 安全漏洞
CVE-2021-25525 2.0 LOW Samsung Pay 代码问题漏洞

IV. Related Vulnerabilities

Same product: Samsung Mobile Devices
Same vendor: Samsung Mobile
Same weakness: CWE-119

V. Comments for CVE-2021-25518

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