PT-2019-18677 · Openssh · Gsi-Openssh-Server

Viraniac · Published 2019-02-08 · Updated 2020-08-24 · CVE-2019-7639

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions gsi-openssh-server version 7.9p1

Description An issue allows logins to succeed with a valid username and an incorrect password when PermitPAMUserChange is set to yes in the /etc/gsissh/sshd config file, despite recording a failure entry in the /var/log/messages file.

Recommendations For gsi-openssh-server version 7.9p1, consider setting PermitPAMUserChange to no in the /etc/gsissh/sshd config file as a temporary workaround to prevent logins with incorrect passwords.

Exploit

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2019-7639

Affected Products

Gsi-Openssh-Server

References · 3

• 🔥 https://bugzilla.redhat.com/show_bug.cgi?id=1673802 · Exploit
• https://osv.dev/vulnerability/CVE-2019-7639 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-7639 · Security Note