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.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in PCSC-Lite up to 1.8.19. This impacts the function SCardReleaseContext. Performing a manipulation results in use after free. This vulnerability is reported as CVE-2016-10109. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in PCSC-Lite up to 1.8.19. This affects the function SCardReleaseContext. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on availability. The summary by CVE is:

Use-after-free vulnerability in pcsc-lite before 1.8.20 allows a remote attackers to cause denial of service (crash) via a command that uses "cardsList" after the handle has been released through the SCardReleaseContext function.

The bug was discovered 03/24/2017. The weakness was disclosed 02/23/2017 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2016-10109 since 01/03/2017. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 96502 (Fedora 24 : pcsc-lite (2017-8311440c55)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196671 (Ubuntu Security Notification for Pcsc-lite Vulnerability (USN-3176-1)).

Upgrading to version 1.8.20 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (96502) and SecurityFocus (BID 95263†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• PCSC-Lite

Version

• 1.8.0
• 1.8.1
• 1.8.2
• 1.8.3
• 1.8.4
• 1.8.5
• 1.8.6
• 1.8.7
• 1.8.8
• 1.8.9
• 1.8.10
• 1.8.11
• 1.8.12
• 1.8.13
• 1.8.14
• 1.8.15
• 1.8.16
• 1.8.17
• 1.8.18
• 1.8.19

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / 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-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 96502
Nessus Name: Fedora 24 : pcsc-lite (2017-8311440c55)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703752
OpenVAS Name: Debian Security Advisory DSA 3752-1 (pcsc-lite - 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: PCSC-Lite 1.8.20

Timelineinfo

12/30/2016 🔍
01/03/2017 +4 days 🔍
01/13/2017 +10 days 🔍
01/16/2017 +3 days 🔍
02/23/2017 +38 days 🔍
02/23/2017 +0 days 🔍
02/24/2017 +1 days 🔍
03/24/2017 +28 days 🔍
10/24/2024 +2771 days 🔍

Sourcesinfo

Advisory: openwall.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-10109 (🔍)
GCVE (CVE): GCVE-0-2016-10109
GCVE (VulDB): GCVE-100-97227

OVAL: 🔍

SecurityFocus: 95263 - PCSC-Lite CVE-2016-10109 Use After Free Local Denial of Service Vulnerability
OSVDB: - CVE-2016-10109 - pcsc-lite - Use-After-Free Issue

Entryinfo

Created: 02/24/2017 08:13
Updated: 10/24/2024 21:16
Changes: 02/24/2017 08:13 (71), 08/16/2020 16:56 (5), 10/24/2024 21:16 (21)
Complete: 🔍
Cache ID: 216:AA1:103

Discussion

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