LXDM up to 0.5.1 X Server improper authentication

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 (≈)
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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.
6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in LXDM up to 0.5.1. It has been declared as problematic. The impacted element is an unknown function of the component X Server. Executing a manipulation can lead to improper authentication. This vulnerability is handled as CVE-2015-8308. It is possible to launch the attack on the local host. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in LXDM up to 0.5.1. This vulnerability affects some unknown processing of the component X Server. The manipulation with an unknown input leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

LXDM before 0.5.2 did not start X server with -auth, which allows local users to bypass authentication with X connections.

The bug was discovered 11/20/2015. The weakness was released 08/24/2017 (oss-sec). The advisory is available at openwall.com. This vulnerability was named CVE-2015-8308 since 11/20/2015. Local access is required to approach this attack. Required for exploitation is a single authentication. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 643 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 0.5.2 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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: LXDM 0.5.2

Timelineinfo

11/20/2015 🔍
11/20/2015 +0 days 🔍
08/24/2017 +643 days 🔍
08/24/2017 +0 days 🔍
08/25/2017 +1 days 🔍
11/10/2019 +807 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8308 (🔍)
GCVE (CVE): GCVE-0-2015-8308
GCVE (VulDB): GCVE-100-105706

Entryinfo

Created: 08/25/2017 08:41
Updated: 11/10/2019 08:28
Changes: 08/25/2017 08:41 (53), 11/10/2019 08:28 (7)
Complete: 🔍
Cache ID: 216::103

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