Robert Ancell LightDM up to 1.9.1 AppArmor access control

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Robert Ancell LightDM. This vulnerability affects unknown code of the component AppArmor. This manipulation causes access control. This vulnerability appears as CVE-2013-4459. There is no available exploit.

Detailsinfo

A vulnerability was found in Robert Ancell LightDM. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component AppArmor. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, and integrity. The summary by CVE is:

LightDM 1.7.5 through 1.8.3 and 1.9.x before 1.9.2 does not apply the AppArmor profile to the Guest account, which allows local users to bypass intended restrictions by leveraging the Guest account.

The weakness was presented 11/23/2013 (Website). It is possible to read the advisory at bugs.launchpad.net. This vulnerability is known as CVE-2013-4459 since 06/12/2013. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 70782 (Ubuntu 13.10 : lightdm vulnerability (USN-2012-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195853 (Ubuntu Security Notification for Lightdm Vulnerability (USN-2012-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (88613), Tenable (70782), SecurityFocus (BID 63291†) and Vulnerability Center (SBV-42336†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Robert Ancell

Name

• LightDM

Version

• 1.7.5
• 1.7.6
• 1.7.7
• 1.7.8
• 1.7.9
• 1.7.10
• 1.7.11
• 1.7.12
• 1.7.13
• 1.7.14
• 1.7.15
• 1.7.16
• 1.7.17
• 1.7.18
• 1.8.0
• 1.8.1
• 1.8.2
• 1.8.3
• 1.9.0
• 1.9.1

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.1
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 70782
Nessus Name: Ubuntu 13.10 : lightdm vulnerability (USN-2012-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 841616
OpenVAS Name: Ubuntu Update for lightdm USN-2012-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/12/2013 🔍
10/22/2013 +132 days 🔍
11/07/2013 +16 days 🔍
11/20/2013 +13 days 🔍
11/23/2013 +3 days 🔍
11/23/2013 +0 days 🔍
03/24/2015 +486 days 🔍
12/25/2024 +3564 days 🔍

Sourcesinfo

Advisory: USN-2012-1
Status: Not defined

CVE: CVE-2013-4459 (🔍)
GCVE (CVE): GCVE-0-2013-4459
GCVE (VulDB): GCVE-100-65563

OVAL: 🔍

X-Force: 88613
SecurityFocus: 63291
Vulnerability Center: 42336 - LightDM Local Security Bypass Vulnerability Due to Inappropriate Wrapper for Guest Accounts, Low

Entryinfo

Created: 03/24/2015 15:54
Updated: 12/25/2024 15:25
Changes: 03/24/2015 15:54 (63), 05/15/2017 11:44 (2), 01/10/2022 22:45 (3), 01/10/2022 22:56 (1), 12/25/2024 15:25 (16)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

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