Path traversal in Jumpserver
CVE-2023-42819

8.9HIGH

Key Information:

Vendor

Jumpserver

Status
Jumpserver
Vendor
CVE Published:
27 September 2023

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 37%

What is CVE-2023-42819?

JumpServer, an open source bastion host, is vulnerable to a directory traversal flaw allowing authenticated users to access and modify system files. This vulnerability arises from improper validation of user input, enabling users to construct URLs that traverse the directory structure. An attacker could exploit this flaw by retrieving sensitive files, such as '/etc/passwd', or altering file contents using specific playbook identifiers obtained from the application. Users are strongly encouraged to upgrade to version 3.6.5 or later to safeguard their systems, as there are no available workarounds.

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Affected Version(s)

jumpserver >= 3.0.0, < 3.6.5

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2023-42819
Created by C1ph3rX13

References

https://github.com/jumpserver/jumpserver/security/advisor...
x_refsource_CONFIRM
https://github.com/jumpserver/jumpserver/commit/d0321a74f...
x_refsource_MISC

EPSS Score

37% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.9
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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