CVE-2021-3750
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I. Basic Information for CVE-2021-3750
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A DMA reentrancy issue was found in the USB EHCI controller emulation of QEMU. EHCI does not verify if the Buffer Pointer overlaps with its MMIO region when it transfers the USB packets. Crafted content may be written to the controller's registers and trigger undesirable actions (such as reset) while the device is still transferring packets. This can ultimately lead to a use-after-free issue. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute arbitrary code within the context of the QEMU process on the host. This flaw affects QEMU versions before 7.0.0.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
QEMU 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）个人开发者的一套模拟处理器软件。该软件具有速度快、跨平台等特点。 QEMU 7.0.0 版本之前存在资源管理错误漏洞，该漏洞源于 EHCI 在传输 USB 数据包时不会验证缓冲区指针是否与其 MMIO 区域重叠。
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 |
|---|---|---|---|---|
| - | QEMU | QEMU before version 7.0.0 | - |
II. Public POCs for CVE-2021-3750
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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- https://gitlab.com/qemu-project/qemu/-/issues/541x_refsource_MISC
- https://security.netapp.com/advisory/ntap-20220624-0003/x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1999073x_refsource_MISC
- https://gitlab.com/qemu-project/qemu/-/issues/556x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-3750
Same Patch Batch · n/a · 2022-05-02 · 23 CVEs total
| CVE-2022-27982 | RG-NBR-E Enterprise Gateway RG-NBR2100G-E 安全漏洞 | |
| CVE-2020-23621 | SVI MS Management System 代码问题漏洞 | |
| CVE-2020-23620 | Orlansoft ERP 代码问题漏洞 | |
| CVE-2020-23618 | Xtend 跨站脚本漏洞 | |
| CVE-2020-23617 | Totolink N200RE跨站脚本漏洞 | |
| CVE-2022-24974 | Email Isolation On-Premise 安全漏洞 | |
| CVE-2022-1515 | MATIO 安全漏洞 | |
| CVE-2021-3643 | SoX 缓冲区错误漏洞 | |
| CVE-2022-28056 | ShopXO 安全漏洞 | |
| CVE-2022-28054 | VanDyke Software VShell for Windows 安全漏洞 | |
| CVE-2022-27983 | RG-NBR-E Enterprise Gateway RG-NBR2100G-E 安全漏洞 | |
| CVE-2022-1475 | FFmpeg 输入验证错误漏洞 | |
| CVE-2022-27466 | MingSoft MCMS SQL注入漏洞 | |
| CVE-2022-28573 | D-Link DIR-823-Pro 操作系统命令注入漏洞 | |
| CVE-2022-28572 | Tenda AX1806 操作系统命令注入漏洞 | |
| CVE-2022-28571 | D-link 882 操作系统命令注入漏洞 | |
| CVE-2022-23904 | Rainworx Auctionworx 跨站请求伪造漏洞 | |
| CVE-2021-46790 | Tuxera NTFS-3G 缓冲区错误漏洞 | |
| CVE-2022-29973 | relan exFAT 安全漏洞 | |
| CVE-2022-29969 | MediaWiki 跨站脚本漏洞 |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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V. Comments for CVE-2021-3750
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