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.
5.8	$0-$5k	0.00

A vulnerability, which was classified as problematic, was found in Wireshark 2.4.0 (Packet Analyzer Software). This affects an unknown part of the file epan/dissectors/packet-mbtcp.c of the component Modbus Dissector. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

In Wireshark 2.4.0, the Modbus dissector could crash with a NULL pointer dereference. This was addressed in epan/dissectors/packet-mbtcp.c by adding length validation.

The bug was discovered 08/29/2017. The weakness was shared 08/30/2017 as Bug 13925 as confirmed bug report (Bugzilla). The advisory is shared at bugs.wireshark.org. This vulnerability is uniquely identified as CVE-2017-13764 since 08/30/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 102921 (Wireshark 2.4.x < 2.4.1 Multiple DoS), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370542 (Wireshark Multiple Vulnerabilities (wnpa-sec-2017-38 to wnpa-sec-2017-41)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (102921). The entries 105970, 105971 and 105972 are related to this item.

Productinfo

Type

• Packet Analyzer Software

Name

• Wireshark

Version

• 2.4.0

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

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: 102921
Nessus Name: Wireshark 2.4.x < 2.4.1 Multiple DoS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801832
OpenVAS Name: Wireshark Modbus Dissector DoS Vulnerability (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: b87ffbd12bddf64582c0a6e082b462744474de94

Timelineinfo

08/29/2017 🔍
08/29/2017 +0 days 🔍
08/30/2017 +1 days 🔍
08/30/2017 +0 days 🔍
08/30/2017 +0 days 🔍
08/30/2017 +0 days 🔍
08/30/2017 +0 days 🔍
09/01/2017 +2 days 🔍
09/01/2017 +0 days 🔍
12/27/2022 +1943 days 🔍

Sourcesinfo

Product: wireshark.org

Advisory: Bug 13925
Researcher: alessandro.cavallaro
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-13764 (🔍)
SecurityTracker: 1039254
SecurityFocus: 100545 - Wireshark Modbus Dissector CVE-2017-13764 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 08/30/2017 16:45
Updated: 12/27/2022 09:47
Changes: 08/30/2017 16:45 (72), 11/12/2019 21:14 (12), 01/10/2021 12:25 (2), 12/27/2022 09:47 (4)
Complete: 🔍
Cache ID: 18:9C3:103

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