Oracle Solaris PAM parse_user_name() buffer overflow (CVE-2020-14871)

critical Nessus Plugin ID 142712
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The SSH server running on the remote host is affected by a buffer overflow vulnerability.


The remote SSH server is affected by a security bypass vulnerability due to a flaw in the parse_user_name() function in the Pluggable Authentication Module (PAM). A remote attacker can exploit this, via a crafted keyboard-interactive username string, to execute arbitrary code on the target system.


Oracle has released security updates for the affected systems.

See Also

Plugin Details

Severity: Critical

ID: 142712

File Name: solaris_ssh_pam_cve-2020-14871.nbin

Version: 1.46

Type: remote

Family: Misc.

Published: 11/11/2020

Updated: 9/13/2021

Dependencies: ssh_detect.nasl

Risk Information

CVSS Score Source: CVE-2020-14871


Risk Factor: Critical

Score: 10


Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:F/RL:OF/RC:C


Risk Factor: Critical

Base Score: 10

Temporal Score: 9.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:oracle:solaris

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/21/2020

Vulnerability Publication Date: 10/21/2020

Exploitable With

Metasploit (Oracle Solaris SunSSH PAM parse_user_name() Buffer Overflow)

Reference Information

CVE: CVE-2020-14871