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CVE-2020-27821

Quick assessment

Affected
n/a QEMU
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.

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 存在缓冲区错误漏洞，该漏洞源于 hw/pci/msix.c的msix_table_mmio_write()堆缓冲区溢出。

AI Predicted 8.0 Difficulty: Moderate EPSS 0.36% · P28
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I. Basic Information for CVE-2020-27821

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the memory management API of QEMU during the initialization of a memory region cache. This issue could lead to an out-of-bounds write access to the MSI-X table while performing MMIO operations. A guest user may abuse this flaw to crash the QEMU process on the host, resulting in a denial of service. This flaw affects QEMU versions prior to 5.2.0.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
QEMU 缓冲区错误漏洞
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 存在缓冲区错误漏洞，该漏洞源于 hw/pci/msix.c的msix_table_mmio_write()堆缓冲区溢出。
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 prior to 5.2.0 -

II. Public POCs for CVE-2020-27821

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III. Intelligence Information for CVE-2020-27821

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Vendor Advisories for CVE-2020-27821 (1)

Mailing List Discussions for CVE-2020-27821 (2)

Same Patch Batch · n/a · 2020-12-08 · 45 CVEs total

CVE-2020-25677 Red Hat ceph-ansible 安全漏洞
CVE-2020-25674 ImageMagick Studio ImageMagick 安全漏洞
CVE-2020-25666 ImageMagick Studio ImageMagick 输入验证错误漏洞
CVE-2020-25675 ImageMagick Studio ImageMagick和Sanitize 输入验证错误漏洞
CVE-2020-27751 ImageMagick Studio ImageMagick 输入验证错误漏洞
CVE-2020-27754 ImageMagick Studio ImageMagick 输入验证错误漏洞
CVE-2020-27756 ImageMagick Studio ImageMagick 输入验证错误漏洞
CVE-2020-27757 ImageMagick Studio ImageMagick 输入验证错误漏洞
CVE-2020-27758 ImageMagick Studio ImageMagick 输入验证错误漏洞
CVE-2020-27750 Imagemagick Studio ImageMagick 数字错误漏洞
CVE-2020-25665 ImageMagick Studio ImageMagick 缓冲区错误漏洞
CVE-2020-27818 Libpng Pngcheck 缓冲区错误漏洞
CVE-2020-25692 OpenLDAP 代码问题漏洞
CVE-2020-27822 Red Hat Wildfly 安全漏洞
CVE-2020-25631 Moodle 安全漏洞
CVE-2020-25630 Moodle 资源管理错误漏洞
CVE-2020-25629 Moodle 访问控制错误漏洞
CVE-2020-25628 Moodle 跨站脚本漏洞
CVE-2020-29540 Systran Pure Neural Server 资源管理错误漏洞
CVE-2020-29539 Systran Pure Neural Server 跨站脚本漏洞

Showing top 20 of 45 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: QEMU
Same vendor: n/a
Same weakness: CWE-787

V. Comments for CVE-2020-27821

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