CVE-2023-42818CWE-287

SSH public key login without private key challenge if mfa is enabled in jumpserver

Medium · published September 27, 2023

CVSS v3.1
5.4
EPSS
1%
Percentile
51.6
In the wild
Unconfirmed
What it is

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 disclosed public key to attempt brute-force authentication against the SSH service This issue has been patched in versions 3.6.5 and 3.5.6. Users are advised to upgrade. There are no known workarounds for this issue.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00675 · 51.6th percentile
Weakness
CWE-287 · Improper Authentication
Published
2023-09-27T20:28Z
EPSS history
Timeline
  • 27 SEP 20:28Z
    SSH public key login without private key challenge if mfa is enabled in jumpserver
    cvelistv5