National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-20378 Detail

Current Description

The L2CAP signaling channel implementation and SDP server implementation in OpenSynergy Blue SDK 3.2 through 6.0 allow remote, unauthenticated attackers to execute arbitrary code or cause a denial of service via malicious L2CAP configuration requests, in conjunction with crafted SDP communication over maliciously configured L2CAP channels. The attacker must have connectivity over the Bluetooth physical layer, and must be able to send raw L2CAP frames. This is related to L2Cap_HandleConfigReq in core/stack/l2cap/l2cap_sm.c and SdpServHandleServiceSearchAttribReq in core/stack/sdp/sdpserv.c.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H (V3 legend)
Impact Score: 5.9
Exploitability Score: 1.6


Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 5.4 MEDIUM
Vector: (AV:A/AC:M/Au:N/C:P/I:P/A:P) (V2 legend)
Impact Subscore: 6.4
Exploitability Subscore: 5.5


Access Vector (AV): Local_Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): Partial
Availability (A): Partial
Additional Information:
Allows unauthorized disclosure of information
Allows unauthorized modification
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://www.cymotive.com/wp-content/uploads/2019/03/Hell2CAP-0day.pdf Exploit Third Party Advisory
https://www.opensynergy.com/news/security/bluesdk-advisory2018003/ Vendor Advisory

Technical Details

Vulnerability Type (View All)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:opensynergy:blue_sdk:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
3.2
Up to (including)
5.5.3
 cpe:2.3:a:opensynergy:blue_sdk:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
6.0
Up to (excluding)
6.0.1


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-20378
NVD Published Date:
03/29/2019
NVD Last Modified:
04/01/2019