CVE-2020-16123— Bypass of snapd pulseaudio restrictions
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I. Basic Information for CVE-2020-16123
Vulnerability Information
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Vulnerability Title
Bypass of snapd pulseaudio restrictions
Source: NVD (National Vulnerability Database)
Vulnerability Description
An Ubuntu-specific patch in PulseAudio created a race condition where the snap policy module would fail to identify a client connection from a snap as coming from a snap if SCM_CREDENTIALS were missing, allowing the snap to connect to PulseAudio without proper confinement. This could be exploited by an attacker to expose sensitive information. Fixed in 1:13.99.3-1ubuntu2, 1:13.99.2-1ubuntu2.1, 1:13.99.1-1ubuntu3.8, 1:11.1-1ubuntu7.11, and 1:8.0-0ubuntu3.15.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: NVD (National Vulnerability Database)
Vulnerability Title
PulseAudio 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PulseAudio是一款用于POSIX OS的开源音频系统。该系统主要用于音频传输等。 PulseAudio 在Ubuntu系统中存在竞争条件问题漏洞，攻击者可利用该漏洞可以绕过对Ubuntu PulseAudio数据的访问限制，获取敏感信息。
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 |
|---|---|---|---|---|
| Canonical | pulseaudio | 1:13.99.3-1 ~ 1:13.99.3-1ubuntu2 | - |
II. Public POCs for CVE-2020-16123
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|---|
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IV. Related Vulnerabilities
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Senstive information disclosure was affecting subiquity
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