CVE-2020-16126— accountsservice drops ruid, allows unprivileged users to send it signals
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I. Basic Information for CVE-2020-16126
Vulnerability Information
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Vulnerability Title
accountsservice drops ruid, allows unprivileged users to send it signals
Source: NVD (National Vulnerability Database)
Vulnerability Description
An Ubuntu-specific modification to AccountsService in versions before 0.6.55-0ubuntu13.2, among other earlier versions, improperly dropped the ruid, allowing untrusted users to send signals to AccountService, thus stopping it from handling D-Bus messages in a timely fashion.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
特权管理不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Ubuntu AccountsService 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Ubuntu AccountsService是个人开发者的一款用于在Linux上管理账户的软件。该软件提供对帐户的查询和操作功能，另外提供一组基于useradd、usermod等命令的API。 AccountsService Privilege Drop 存在安全漏洞，该漏洞可触发致命错误，进而导致触发拒绝服务。
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 |
|---|---|---|---|---|
| Freedesktop | accountsservice | 0.6.35-0ubuntu7.3 ~ 0.6.35-0ubuntu7.3+esm2 | - |
II. Public POCs for CVE-2020-16126
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | A bash script exploit of [CVE-2020-16126/CVE-2020-16127] to achieve privilege escalation.Ubuntu 16.04-20.04 LTS本地提权漏洞利用脚本。要求拥有Gnome图形化环境。 | https://github.com/zev3n/Ubuntu-Gnome-privilege-escalation | POC Details |
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V. Comments for CVE-2020-16126
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