Wireshark up to 2.6.0 DNS Dissector packet-dns.c null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability, which was classified as problematic, was found in Wireshark (Packet Analyzer Software). This affects an unknown function of the file epan/dissectors/packet-dns.c of the component DNS 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 bug was discovered 05/22/2018. The weakness was presented 05/22/2018 as Bug 14681 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugs.wireshark.org. This vulnerability is uniquely identified as CVE-2018-11356 since 05/21/2018. 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 110177 (openSUSE Security Update : wireshark (openSUSE-2018-520)), 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 171605 (SUSE Enterprise Linux Security Update for wireshark (SUSE-SU-2018:2891-1)).

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

The vulnerability is also documented in the vulnerability database at Tenable (110177). See 111209, 118081, 118082 and 118084 for similar entries.





  • open-source

CPE 2.3info

CPE 2.2info


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: 🔍



VulDB Base Score: 🔍
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NVD Base Score: 🔍


Class: Null pointer dereference
CWE: CWE-476 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 110177
Nessus Name: openSUSE Security Update : wireshark (openSUSE-2018-520)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 64946
OpenVAS Name: Fedora Update for wireshark FEDORA-2018-3dfee621af
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Patch: 4425716ddba99374749bd033d9bc0f4add2fb973


05/21/2018 🔍
05/22/2018 +0 days 🔍
05/22/2018 +0 days 🔍
05/22/2018 +0 days 🔍
05/22/2018 +0 days 🔍
05/23/2018 +1 days 🔍
05/25/2018 +2 days 🔍
05/29/2018 +4 days 🔍
03/14/2023 +1750 days 🔍


Product: wireshark.org

Advisory: Bug 14681
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-11356 (🔍)
SecurityTracker: 1041036
SecurityFocus: 104308 - Wireshark Multiple Denial of Service Vulnerabilities

See also: 🔍


Created: 05/23/2018 08:51 AM
Updated: 03/14/2023 04:26 PM
Changes: 05/23/2018 08:51 AM (76), 02/07/2020 10:03 PM (6), 03/14/2023 04:26 PM (6)
Complete: 🔍


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