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Vulnerability · Published Sep 15, 2023 · Assigned by GitHub_M

CVE-2023-42442JumpServer session replays download without authentication

High 8.2

In plain English

A high-severity improper authentication in jumpserver from jumpserver. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 63.0% (higher than 99.2% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei, public proof-of-concept code.

Severity (CVSS 3.1)8.2High
Exploit odds (30 days)63.0%top 0.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling2Nuclei, Public PoC

Official 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`).

Affected products (as reported)

VendorProductVersions
jumpserver jumpserver >= 3.0.0, < 3.5.5>= 3.6.0, < 3.6.4

Weakness: CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

References