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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.012 (67.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 67.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000
Affected products
- Gsi-Openssh Project — versions 7.9
- Fedoraproject Fedora — versions 28, 29
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Exploit, Third Party Advisory, 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.