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CVE-2021-21787

Quick assessment

Affected
n/a Iobit
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.

Iobit IOBit Advanced SystemCare是英国IOBit（Iobit）公司的一款系统管理实用程序。该程序主要用于扫描、修复和优化系统等。 IOBit Advanced SystemCare Ultimate存在安全漏洞，该漏洞源于IOBit Advanced SystemCare Ultimate 14.2.0.220版本的驱动程序处理特权 I/O 写入请求的方法中存在提权漏洞。本地攻击者可以发送恶意 IRP 来触发此漏洞。

AI Predicted 8.8 Difficulty: Moderate EPSS 0.34% · P25

Possible ATT&CK Techniques 1 AI

T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-21787

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A privilege escalation vulnerability exists in the way IOBit Advanced SystemCare Ultimate 14.2.0.220 driver handles Privileged I/O write requests. During IOCTL 0x9c40a0d8, the first dword passed in the input buffer is the device port to write to and the byte at offset 4 is the value to write via the OUT instruction. The OUT instruction can write one byte to the given I/O device port, potentially leading to escalated privileges of unprivileged users.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
无充分访问控制条件下暴露IOCTL
Source: CVE Program / CVE List V5
Vulnerability Title
IOBit Advanced SystemCare 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Iobit IOBit Advanced SystemCare是英国IOBit（Iobit）公司的一款系统管理实用程序。该程序主要用于扫描、修复和优化系统等。 IOBit Advanced SystemCare Ultimate存在安全漏洞，该漏洞源于IOBit Advanced SystemCare Ultimate 14.2.0.220版本的驱动程序处理特权 I/O 写入请求的方法中存在提权漏洞。本地攻击者可以发送恶意 IRP 来触发此漏洞。
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
- Iobit IOBit Advanced SystemCare Ultimate 14.2.0.220 -

II. Public POCs for CVE-2021-21787

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III. Intelligence Information for CVE-2021-21787

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Other References for CVE-2021-21787 (1)

Same Patch Batch · n/a · 2021-07-07 · 42 CVEs total

CVE-2021-22555 8.3 HIGH Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE
CVE-2020-25925 IceWarp WebClient 跨站脚本漏洞
CVE-2021-21807 Accusoft ImageGear 输入验证错误漏洞
CVE-2021-26273 NinjaRMM 访问控制错误漏洞
CVE-2021-26274 NinjaRMM 安全漏洞
CVE-2021-28931 Fork CMS 代码问题漏洞
CVE-2021-31925 Pexip Infinity 输入验证错误漏洞
CVE-2021-33215 CommScope Ruckus IoT Controller 路径遍历漏洞
CVE-2021-33216 CommScope Ruckus IoT Controller 安全漏洞
CVE-2021-33217 CommScope Ruckus IoT Controller 缓冲区错误漏洞
CVE-2021-33218 CommScope Ruckus IoT Controller 信任管理问题漏洞
CVE-2021-33219 CommScope Ruckus IoT Controller 信任管理问题漏洞
CVE-2021-33220 CommScope Ruckus IoT Controller 信任管理问题漏洞
CVE-2021-33221 CommScope Ruckus IoT Controller 访问控制错误漏洞
CVE-2021-21788 IOBit Advanced SystemCare 安全漏洞
CVE-2021-21789 IOBit Advanced SystemCare 安全漏洞
CVE-2021-21786 Iobit IOBit Advanced SystemCare 访问控制错误漏洞
CVE-2020-23700 LavaLite 跨站脚本漏洞
CVE-2020-23702 PHP-Fusion 跨站脚本漏洞
CVE-2021-21775 WebKit WebKitGTK 资源管理错误漏洞

Showing top 20 of 42 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Iobit
Same vendor: n/a
Same weakness: CWE-782

V. Comments for CVE-2021-21787

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