Linux Kernel up to 3.18 l2cap Socket core.c bnep_add_connection Crafted Application 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.
7.6$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Linux Kernel up to 3.18. Affected is the function bnep_add_connection of the file net/bluetooth/bnep/core.c of the component l2cap Socket. The manipulation as part of Crafted Application leads to access control. This vulnerability is traded as CVE-2017-15868. The attack needs to be approached locally. There is no exploit available. It is recommended to upgrade the affected component. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Detailsinfo

A vulnerability was found in Linux Kernel up to 3.18 (Operating System). It has been rated as critical. This issue affects the function bnep_add_connection of the file net/bluetooth/bnep/core.c of the component l2cap Socket. The manipulation as part of a Crafted Application leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The bnep_add_connection function in net/bluetooth/bnep/core.c in the Linux kernel before 3.19 does not ensure that an l2cap socket is available, which allows local users to gain privileges via a crafted application.

The weakness was shared 12/05/2017 as confirmed git commit (GIT Repository). The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2017-15868 since 10/24/2017. An attack has to be approached locally. Required for exploitation is a simple authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 105116 (Debian DLA-1200-1 : linux security update (KRACK)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170629 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2018:0011-1) (Spectre/Meltdown)).

Upgrading to version 3.19 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (105116) and SecurityFocus (BID 102084†). The entries VDB-110197, VDB-110289 and VDB-110475 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock
unlockunlockunlockunlockunlockunlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Dayunlockunlockunlockunlock
Todayunlockunlockunlockunlock

Nessus ID: 105116
Nessus Name: Debian DLA-1200-1 : linux security update (KRACK)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 831717
OpenVAS Name: Debian Security Advisory DSA 4082-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 3.19
Patch: git.kernel.org

Timelineinfo

10/24/2017 🔍
12/04/2017 +40 days 🔍
12/05/2017 +1 days 🔍
12/05/2017 +0 days 🔍
12/06/2017 +1 days 🔍
01/17/2023 +1868 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 71bb99a02b32b4cc4265118e85f6035ca72923f0
Researcher: Al Viro
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-15868 (🔍)
GCVE (CVE): GCVE-0-2017-15868
GCVE (VulDB): GCVE-100-110249

OVAL: 🔍

SecurityFocus: 102084

See also: 🔍

Entryinfo

Created: 12/06/2017 08:07
Updated: 01/17/2023 08:26
Changes: 12/06/2017 08:07 (48), 11/09/2019 13:02 (30), 01/25/2021 18:57 (2), 01/25/2021 18:59 (3), 01/25/2021 19:03 (1), 01/17/2023 08:21 (3), 01/17/2023 08:26 (1)
Complete: 🔍
Cache ID: 216:FD7:103

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!