CVE-2023-42442

HIGH NUCLEI

Fit2cloud Jumpserver < 3.5.5 - Authentication Bypass

Title source: rule

Description

JumpServer is an open source bastion host and a professional operation and maintenance security audit system. Starting in version 3.0.0 and prior to versions 3.5.5 and 3.6.4, session replays can download without authentication. Session replays stored in S3, OSS, or other cloud storage are not affected. The api `/api/v1/terminal/sessions/` permission control is broken and can be accessed anonymously. SessionViewSet permission classes set to `[RBACPermission | IsSessionAssignee]`, relation is or, so any permission matched will be allowed. Versions 3.5.5 and 3.6.4 have a fix. After upgrading, visit the api `$HOST/api/v1/terminal/sessions/?limit=1`. The expected http response code is 401 (`not_authenticated`).

Exploits (3)

nomisec WORKING POC 270 stars
by tarihub · poc
https://github.com/tarihub/blackjump
nomisec WORKING POC 40 stars
by HolyGu · poc
https://github.com/HolyGu/CVE-2023-42442
nomisec WORKING POC 9 stars
by C1ph3rX13 · poc
https://github.com/C1ph3rX13/CVE-2023-42442

Nuclei Templates (1)

JumpServer > 3.6.4 - Information Disclosure
MEDIUMVERIFIEDby xianke
FOFA: title="JumpServer" || title="jumpserver"

References (3)

Scores

CVSS v3 8.2
EPSS 0.8817
EPSS Percentile 99.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Details

CWE
CWE-287
Status published
Products (1)
fit2cloud/jumpserver 3.0.0 - 3.5.5
Published Sep 15, 2023
Tracked Since Feb 18, 2026