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CVE-2020-1711

Quick assessment

Affected
Red Hat QEMU
Exploitation
High exploitation probability; assess promptly
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）软件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 4.2.1之前的2.12.0版本中的iSCSI Block驱动程序存在缓冲区错误漏洞。远程攻击者可利用该漏洞造成QEMU进程崩溃，导致拒绝服务或以QEMU进程的权限执行任意代码。

CVSS 7.7 · High EPSS 4.02% · P90
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I. Basic Information for CVE-2020-1711

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU versions 2.12.0 before 4.2.1 handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
QEMU iSCSI Block驱动程序缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
QEMU（Quick Emulator）是法国法布里斯-贝拉（Fabrice Bellard）软件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 4.2.1之前的2.12.0版本中的iSCSI Block驱动程序存在缓冲区错误漏洞。远程攻击者可利用该漏洞造成QEMU进程崩溃，导致拒绝服务或以QEMU进程的权限执行任意代码。
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
Red Hat QEMU All qemu versions 2.12.0 before 4.2.1 -

II. Public POCs for CVE-2020-1711

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III. Intelligence Information for CVE-2020-1711

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Vendor Advisories for CVE-2020-1711 (7)

Mailing List Discussions for CVE-2020-1711 (5)

IV. Related Vulnerabilities

Same product: QEMU
Same vendor: Red Hat
Same weakness: CWE-122

V. Comments for CVE-2020-1711

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