BlueZ 5.42 Dump File tools/parser/l2cap.c set_ext_ctrl memory corruption

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 identified as critical has been detected in BlueZ 5.42. This impacts the function set_ext_ctrl of the file tools/parser/l2cap.c of the component Dump File Handler. This manipulation causes memory corruption. The identification of this vulnerability is CVE-2016-9801. It is possible to initiate the attack remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in BlueZ 5.42. It has been declared as critical. Affected by this vulnerability is the function set_ext_ctrl of the file tools/parser/l2cap.c of the component Dump File Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In BlueZ 5.42, a buffer overflow was observed in "set_ext_ctrl" function in "tools/parser/l2cap.c" source file when processing corrupted dump file.

The bug was discovered 11/14/2016. The weakness was shared 12/03/2016 (Website). The advisory is shared at securityfocus.com. This vulnerability is known as CVE-2016-9801 since 12/03/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 19 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119806 (SUSE SLED12 / SLES12 Security Update : bluez (SUSE-SU-2018:4188-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171782 (SUSE Enterprise Linux Security Update for bluez (SUSE-SU-2018:4188-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119806) and SecurityFocus (BID 94652†). The entries VDB-93945, VDB-93946, VDB-93947 and VDB-93948 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

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

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 119806
Nessus Name: SUSE SLED12 / SLES12 Security Update : bluez (SUSE-SU-2018:4188-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

11/14/2016 🔍
11/14/2016 +0 days 🔍
12/03/2016 +19 days 🔍
12/03/2016 +0 days 🔍
12/03/2016 +0 days 🔍
12/03/2016 +0 days 🔍
12/19/2018 +746 days 🔍
12/20/2018 +1 days 🔍
06/15/2019 +177 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Status: Confirmed

CVE: CVE-2016-9801 (🔍)
GCVE (CVE): GCVE-0-2016-9801
GCVE (VulDB): GCVE-100-93949
SecurityFocus: 94652 - BlueZ Buffer Overflow and Denial of Service Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/03/2016 19:04
Updated: 06/15/2019 18:41
Changes: 12/03/2016 19:04 (58), 06/15/2019 18:41 (21)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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!