Local File Creation Vulnerability in Ubuntu's OverlayFS Implementation
CVE-2015-1328

7.8HIGH

Key Information:

Vendor

Canonical

Status
Ubuntu Linux
Vendor
CVE Published:
28 November 2016

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 89%

What is CVE-2015-1328?

The OverlayFS implementation in Ubuntu's Linux kernel prior to version 3.19.0-21.21 fails to enforce proper permission checks on file creation within the upper filesystem directory. This oversight can be exploited by local users in scenarios where OverlayFS is allowed in an arbitrary mount namespace, potentially leading to unauthorized root access.

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.

Metasploit exploit module for CVE-2015-1328
Created by Rapid7

CVE-2015-1328-GoldenEye
Created by 0x1ns4n3

CVE-2015-1328
Created by 0xf1d0

References

https://people.canonical.com/~ubuntu-security/cve/2015/CV...
x_refsource_CONFIRM
http://www.securityfocus.com/bid/75206
vdb-entryx_refsource_BID
https://www.exploit-db.com/exploits/37292/
exploitx_refsource_EXPLOIT-DB

EPSS Score

89% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2015-1328 : Local File Creation Vulnerability in Ubuntu's OverlayFS Implementation