VDB-134000 · CVE-2019-11490 · Issue 1568

Npcap 0.992 on Windows PCAP File pcap_sendqueue_queue/pcap_sendqueue_transmit double free

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.
8.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Npcap 0.992 on Windows. It has been declared as critical. This impacts the function pcap_sendqueue_queue/pcap_sendqueue_transmit of the component PCAP File Handler. Such manipulation leads to double free. This vulnerability is referenced as CVE-2019-11490. The attack can only be performed from a local environment. No exploit is available.

Detailsinfo

A vulnerability was found in Npcap 0.992 on Windows. It has been rated as critical. Affected by this issue is the function pcap_sendqueue_queue/pcap_sendqueue_transmit of the component PCAP File Handler. The manipulation with an unknown input leads to a double free vulnerability. Using CWE to declare the problem leads to CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Npcap 0.992. Sending a malformed .pcap file with the loopback adapter using either pcap_sendqueue_queue() or pcap_sendqueue_transmit() results in kernel pool corruption. This could lead to arbitrary code executing inside the Windows kernel and allow escalation of privileges.

The bug was discovered 04/22/2019. The weakness was published 04/24/2019. This vulnerability is handled as CVE-2019-11490 since 04/23/2019. The attack needs to be approached locally. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Npcap

Version

0.992

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.3

VulDB Base Score: 8.8
VulDB Temp Score: 8.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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: Double free
CWE: CWE-415 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/22/2019 🔍
04/23/2019 +1 days 🔍
04/24/2019 +1 days 🔍
04/24/2019 +0 days 🔍
09/06/2023 +1596 days 🔍

Sourcesinfo

Advisory: 1568
Status: Not defined

CVE: CVE-2019-11490 (🔍)
GCVE (CVE): GCVE-0-2019-11490
GCVE (VulDB): GCVE-100-134000

Entryinfo

Created: 04/24/2019 11:31
Updated: 09/06/2023 17:22
Changes: 04/24/2019 11:31 (54), 06/01/2020 16:39 (1), 09/06/2023 17:22 (4)
Complete: 🔍
Cache ID: 216::103