What is CVE-2019-7639?

CVE-2019-7639 is a high-severity vulnerability in Gsi-Openssh Project, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2019-02-08.

How severe is CVE-2019-7639?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Gsi-Openssh Project

CVE-2019-7639

An issue was discovered in gsi-openssh-server 7.9p1 on Fedora 29. If PermitPAMUserChange is set to yes in the /etc/gsissh/sshd_config file, logins succeed with a valid username and an incorrect password, even though a failure entry is recorded in the /var/log/messages file.

Vulnerability class: Broken Access Control

EPSS: 0.012 (65.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Gsi-openssh_project Gsi-openssh — versions 7.9
Fedoraproject Fedora — versions 28, 29
N/a — versions n/a

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2019-7639?: CVE-2019-7639 is a high-severity vulnerability in Gsi-Openssh Project, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2019-02-08.
How severe is CVE-2019-7639?: High severity. CVSS v3 base score is 8.1 out of 10.