#VU77475 Incorrect default permissions in kexec-tools - CVE-2021-20269

Vulnerability identifier: #VU77475

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-20269

CWE-ID: CWE-276

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
kexec-tools
Other software / Other software solutions

Vendor: git.kernel.org

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to incorrect default permissions for files and folders that are set by the application. A local user can read arbitrary files and leak kernel internal information from a previous panic.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

kexec-tools: before 2.0.20-47

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=1934261

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.