#VU48379 Infinite loop in accountsservice (Ubuntu package) - CVE-2020-16127

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Main Vulnerability Database Vulnerabilities #VU48379

#VU48379 Infinite loop in accountsservice (Ubuntu package) - CVE-2020-16127

Published: November 11, 2020 / Updated: November 12, 2020


Vulnerability identifier: #VU48379
Vulnerability risk: Low
CVSSv4.0: 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:P/U:Clear
CVE-ID: CVE-2020-16127
CWE-ID: CWE-835
Exploitation vector: Local access
Exploit availability: Public exploit is available
Vulnerable software:
accountsservice (Ubuntu package)
Software vendor:
Canonical Ltd.

Description

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

The vulnerability exists due to infinite loop in the "is_in_pam_environment" function. A local user can trigger an infinite loop by creating a symlink to "/dev/zero" and cause denial of service conditions.


Remediation

Install updates from vendor's website.

External links