Privilege escalation in Google Guava

Published: 2020-12-11 | Updated: 2023-06-08

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2020-8908
CWE-ID	CWE-276
Exploitation vector	Local
Public exploit	N/A
Vulnerable software Subscribe	Guava: Google Core Libraries For Java Universal components / Libraries / Libraries used by multiple products
Vendor	Google

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Incorrect default permissions

EUVDB-ID: #VU50139

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-8908

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to incorrect default permissions for files located in the temporary directory set by the Guava com.google.common.io.Files.createTempDir(). A local user with access to the system can view contents of files and directories or modify them.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Guava: Google Core Libraries For Java: 1.0 - 31.1

External links

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.