Auth bypass in Fit2cloud Jumpserver
CVE-2023-42818
JumpServer is an open source bastion host. When users enable MFA and use a public key for authentication, the Koko SSH server does not verify the corresponding SSH private key. An attacker could exploit a vulnerability by utilizing a discl…
Vulnerability class: Broken Authentication
EPSS: 0.006 (44.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L.
Affected products
- Fit2cloud Jumpserver
- Jumpserver — versions >= 3.6.0, < 3.6.5, < 3.5.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-42818?
- CVE-2023-42818 is a medium-severity vulnerability in Fit2cloud Jumpserver, classified under Improper Authentication. CVSS score: 5.4/10. Published 2023-09-27.
- How severe is CVE-2023-42818?
- Medium severity. CVSS v3 base score is 5.4 out of 10.
- Is CVE-2023-42818 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.