#VU66638 Permissions, Privileges, and Access Controls in schroot - CVE-2022-2787

Vulnerability identifier: #VU66638

Vulnerability risk: Low

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

CVE-ID: CVE-2022-2787

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
schroot
Universal components / Libraries / Libraries used by multiple products

Vendor: fragmede

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to schroot has too permissive rules on chroot or session names. A local user can perform a denial of service on the schroot service for all users that may start a schroot session.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

schroot: 0.1.0 - 1.7.2

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External links
https://codeberg.org/shelter/reschroot/src/tag/release/reschroot-1.6.13/NEWS#L10-L41

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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.