Ghost Open Source CMS Vulnerability Allows Authenticated Users to Read Arbitrary Files
CVE-2023-40028

4.9MEDIUM

Key Information:

Vendor

Tryghost

Status
Ghost
Vendor
CVE Published:
15 August 2023

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 77%

What is CVE-2023-40028?

Ghost is an open source content management system. Versions prior to 5.59.1 are subject to a vulnerability which allows authenticated users to upload files that are symlinks. This can be exploited to perform an arbitrary file read of any file on the host operating system. Site administrators can check for exploitation of this issue by looking for unknown symlinks within Ghost's content/ folder. Version 5.59.1 contains a fix for this issue. All users are advised to upgrade. There are no known workarounds for this vulnerability.

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Deploy the Patch

Affected Version(s)

Ghost < 5.59.1

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-2023-40028-Ghost-Arbitrary-File-Read
Created by monke443

CVE-2023-40028
Created by syogod

CVE-2023-40028
Created by BBSynapse

References

https://github.com/TryGhost/Ghost/security/advisories/GHS...
x_refsource_CONFIRM
https://github.com/TryGhost/Ghost/commit/690fbf3f7302ff3f...
x_refsource_MISC

EPSS Score

77% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
4.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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