Less Compiler prior 3.0 Javascript Compiler Less.js privileges management

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-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Less Compiler. This affects an unknown function of the file Less.js of the component Javascript Compiler. The manipulation results in privileges management. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Less Compiler. Affected is some unknown functionality of the file Less.js of the component Javascript Compiler. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 03/18/2016. The weakness was released 11/24/2016 with RedTeam Pentesting GmbH as [RT-SA-2016-003] Less.js: Compilation of Untrusted LESS Files May Lead to Code Execution through the JavaScript Less Compiler as confirmed mailinglist post (Full-Disclosure). The advisory is shared for download at seclists.org. The public release was coordinated with the vendor. The exploitability is told to be easy. The attack needs to be approached locally. A authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 251 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 3.0 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Less Compiler 3.0

Timelineinfo

03/18/2016 🔍
05/03/2016 +46 days 🔍
05/31/2016 +28 days 🔍
11/24/2016 +177 days 🔍
11/25/2016 +1 days 🔍
06/10/2019 +927 days 🔍

Sourcesinfo

Advisory: [RT-SA-2016-003] Less.js: Compilation of Untrusted LESS Files May Lead to Code Execution through the JavaScript Less Compiler
Organization: RedTeam Pentesting GmbH
Status: Confirmed
Coordinated: 🔍

GCVE (VulDB): GCVE-100-93816

Entryinfo

Created: 11/25/2016 12:27
Updated: 06/10/2019 08:46
Changes: 11/25/2016 12:27 (45), 06/10/2019 08:46 (1)
Complete: 🔍
Cache ID: 216::103

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