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CVE-2021-4034

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

Current Description

A local privilege escalation vulnerability was found on polkit's pkexec utility. The pkexec application is a setuid tool designed to allow unprivileged users to run commands as privileged users according predefined policies. The current version of pkexec doesn't handle the calling parameters count correctly and ends trying to execute environment variables as commands. An attacker can leverage this by crafting environment variables in such a way it'll induce pkexec to execute arbitrary code. When successfully executed the attack can cause a local privilege escalation given unprivileged users administrative rights on the target machine.


View Analysis Description

Evaluator Description

Please note that the fix for polkit has been committed to master, but an official release has not been supplied by the maintainers at the time of analysis. This limits the ability of our staff to represent this product through CPE. We advise all users reach out to the organizations responsible for maintaining their package repository to ensure the appropriate version and/or patch of your packages are installed.

Severity



CVSS 3.x Severity and Metrics:

NIST: NVD
Base Score:  7.8 HIGH
Vector:  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.


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上一篇:
CVE-2019-14153发布时间:2022-02-05
下一篇:
CVE-2021-29991发布时间:2022-02-05
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