LXDM up to 0.5.1 X Server improper authentication

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

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.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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: 🔍

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 (🔍)

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: 🔍

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