Ubuntu Linux up to 15.04 overlayfs access control

CVSS Meta Temp Score
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CTI Interest Score
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7.6$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Ubuntu Linux up to 15.04. Affected is an unknown function of the component overlayfs. The manipulation results in access control. This vulnerability is known as CVE-2015-1328. Attacking locally is a requirement. Furthermore, an exploit is available. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Ubuntu Linux up to 15.04 (Operating System). It has been classified as critical. Affected is an unknown code block of the component overlayfs. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The overlayfs implementation in the linux (aka Linux kernel) package before 3.19.0-21.21 in Ubuntu through 15.04 does not properly check permissions for file creation in the upper filesystem directory, which allows local users to obtain root access by leveraging a configuration in which overlayfs is permitted in an arbitrary mount namespace.

The bug was discovered 06/16/2015. The weakness was published 11/28/2016 by Philip Pettersson (Website). The advisory is shared for download at seclists.org. This vulnerability is traded as CVE-2015-1328 since 01/22/2015. The exploitability is told to be easy. The attack needs to be approached locally. The requirement for exploitation is a authentication. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The exploit is shared for download at exploit-db.com. It is declared as highly functional. As 0-day the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 84210 (Ubuntu 14.04 LTS : linux vulnerability (USN-2643-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196147 (Ubuntu Security Notification for Linux-lts-utopic Vulnerability (USN-2644-1)).

Applying a patch is able to eliminate this problem. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (37292), Tenable (84210) and SecurityFocus (BID 75206†). Similar entry is available at VDB-75952. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84210
Nessus Name: Ubuntu 14.04 LTS : linux vulnerability (USN-2643-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 900540
OpenVAS Name: Ubuntu Update for linux USN-2643-2
OpenVAS File: 🔍
OpenVAS Family: 🔍

Saint ID: exploit_info/overlayfs_priv_elev
Saint Name: Ubuntu overlayfs privilege elevation

Qualys ID: 🔍
Qualys Name: 🔍

MetaSploit ID: overlayfs_priv_esc.rb
MetaSploit Name: Overlayfs Privilege Escalation
MetaSploit File: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/22/2015 🔍
06/15/2015 +144 days 🔍
06/16/2015 +1 days 🔍
06/16/2015 +0 days 🔍
06/16/2015 +0 days 🔍
11/27/2016 +530 days 🔍
11/28/2016 +1 days 🔍
11/28/2016 +0 days 🔍
11/30/2024 +2924 days 🔍

Sourcesinfo

Vendor: ubuntu.com

Advisory: USN-2643-1
Researcher: Philip Pettersson
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-1328 (🔍)
GCVE (CVE): GCVE-0-2015-1328
GCVE (VulDB): GCVE-100-93840
SecurityFocus: 75206 - Ubuntu Linux CVE-2015-1328 Local Privilege Escalation Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 11/28/2016 09:31
Updated: 11/30/2024 19:38
Changes: 11/28/2016 09:31 (70), 06/11/2019 09:43 (18), 10/04/2022 14:25 (3), 11/24/2024 15:19 (16), 11/30/2024 19:38 (4)
Complete: 🔍
Cache ID: 216:C70:103

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