Arbitrary File Write in GibbonEdu Product by Gibbon SaaS
CVE-2023-45878

9.8CRITICAL

Key Information:

Vendor

Gibbonedu

Status
Gibbon
Vendor
CVE Published:
14 November 2023

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 93%

What is CVE-2023-45878?

The GibbonEdu product, specifically versions 25.0.1 and prior, is susceptible to an Arbitrary File Write vulnerability. This occurs because the endpoint rubrics_visualise_saveAjax.phps does not enforce proper authentication checks. Attackers can exploit this vulnerability by supplying crafted img, path, and gibbonPersonID parameters. The img parameter must be a base64 encoded image, while the path parameter can dictate where the file is saved, utilizing the installation directory's absolute path. This lack of authentication permits the creation of PHP files in arbitrary locations, potentially leading to Remote Code Execution without any authentication requirements.

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-2023-45878
Created by killercd

CVE-2023-45878_to_RCE
Created by 0xyy66

CVE-2023-45878
Created by davidzzo23

References

https://herolab.usd.de/security-advisories/usd-2023-0025/

EPSS Score

93% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2023-45878 : Arbitrary File Write in GibbonEdu Product by Gibbon SaaS