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CVE-2020-10702

Quick assessment

Affected
The QEMU Project 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）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中存在安全漏洞。本地攻击者可借助受保护指针的签名利用该漏洞绕过Pauth保护。

CVSS 5.5 · Medium EPSS 0.33% · P24

Possible ATT&CK Techniques 1 AI

T1548.001 · Setuid and Setgid
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I. Basic Information for CVE-2020-10702

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in QEMU in the implementation of the Pointer Authentication (PAuth) support for ARM introduced in version 4.0 and fixed in version 5.0.0. A general failure of the signature generation process caused every PAuth-enforced pointer to be signed with the same signature. A local attacker could obtain the signature of a protected pointer and abuse this flaw to bypass PAuth protection for all programs running on QEMU.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
缺少必要的密码学步骤
Source: CVE Program / CVE List V5
Vulnerability Title
QEMU 安全漏洞
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中存在安全漏洞。本地攻击者可借助受保护指针的签名利用该漏洞绕过Pauth保护。
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
The QEMU Project qemu >= 4.0.0, < 5.0.0 -

II. Public POCs for CVE-2020-10702

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III. Intelligence Information for CVE-2020-10702

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Vendor Advisories for CVE-2020-10702 (2)

Other References for CVE-2020-10702 (1)

IV. Related Vulnerabilities

Same product: qemu
Same vendor: The QEMU Project
Same weakness: CWE-325

V. Comments for CVE-2020-10702

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