THREATPORT/VULNERABILITY/CVE-2023-42820
HIGH SEVERITY

CVE-2023-42820

Jumpserver vulnerability

CVSS
7.0
EPSS
5.4%
EPSS pct
92th
Exploited
No known
JumpServer is an open source bastion host. This vulnerability is due to exposing the random number seed to the API, potentially allowing the randomly generated verification codes to be replayed, which could lead to password resets. If MFA is enabled users are not affect. Users not using local authentication are also not affected. Users are advised to upgrade to either version 2.28.19 or to 3.6.5. There are no known workarounds or this issue.
Affected vendor
Fit2cloud
Affected product
Jumpserver
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L
Weakness type (CWE)
  • CWE-200 — Exposure of Sensitive Information
Published
2023-09-27

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, high impact to integrity, low impact to availability.

Its EPSS score of 5.4% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 92% of all scored CVEs.

Check your external exposure to CVE-2023-42820

  • Confirm whether Fit2cloud Jumpserver is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2023-42820.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2023-42820

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