Xibo CMS vulnerable to Remote Code Execution through Zip Slip
CVE-2023-33177

8.8HIGH

Key Information:

Vendor

Xibosignage

Status
Xibo-cms
Vendor
CVE Published:
30 May 2023

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 34%

What is CVE-2023-33177?

A path traversal vulnerability exists in Xibo CMS, which allows an authenticated user to upload a specially crafted zip file through the layout import function. This can lead to the creation of files outside the designated CMS library directory, enabling the potential upload of a PHP web shell within the web root directory. This breach can result in remote code execution under the web server's user privileges. Users are advised to upgrade to the patched versions, specifically 2.3.17 or 3.3.5, to mitigate this risk. Xibo Signage customers have already received necessary upgrades to address this issue.

Affected Version(s)

xibo-cms >= 1.8.0, < 2.3.17 < 1.8.0, 2.3.17

xibo-cms >= 3.0.0, < 3.3.5 < 3.0.0, 3.3.5

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.

Xibo-CMS-Zip-Slip-RCE-Exploit-CVE-2023-33177
Created by complexusprada

-CVE-2023-33177-
Created by kaxm23

References

https://github.com/xibosignage/xibo-cms/security/advisori...
x_refsource_CONFIRM
https://github.com/xibosignage/xibo-cms/commit/1cbba380fa...
x_refsource_MISC
https://github.com/xibosignage/xibo-cms/commit/45c6b53c39...
x_refsource_MISC

EPSS Score

34% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

.