Wireshark up to 2.0.0 S7COMM Dissector packet-s7comm_szl_ids.c s7comm_decode_ud_cpu_szl_subfunc input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Wireshark up to 2.0.0. This affects the function s7comm_decode_ud_cpu_szl_subfunc of the file epan/dissectors/packet-s7comm_szl_ids.c of the component S7COMM Dissector. The manipulation results in input validation. This vulnerability is reported as CVE-2015-8738. The attack requires a local approach. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Wireshark up to 2.0.0 (Packet Analyzer Software). Affected is the function s7comm_decode_ud_cpu_szl_subfunc of the file epan/dissectors/packet-s7comm_szl_ids.c of the component S7COMM Dissector. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

The s7comm_decode_ud_cpu_szl_subfunc function in epan/dissectors/packet-s7comm_szl_ids.c in the S7COMM dissector in Wireshark 2.0.x before 2.0.1 does not validate the list count in an SZL response, which allows remote attackers to cause a denial of service (divide-by-zero error and application crash) via a crafted packet.

The weakness was disclosed 01/04/2016 by Mateusz Jurczyk (Website). The advisory is available at code.wireshark.org. This vulnerability is traded as CVE-2015-8738 since 01/03/2016. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 87825 (Wireshark 2.0.0 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.

Upgrading to version 2.0.1 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 databases at Tenable (87825), SecurityFocus (BID 79815†) and Vulnerability Center (SBV-55624†). The entries VDB-80078, VDB-80079, VDB-80080 and VDB-80081 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 87825
Nessus Name: Wireshark 2.0.0 Multiple DoS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802978
OpenVAS Name: Wireshark Multiple Denial-of-Service Vulnerabilities-01 January16 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Wireshark 2.0.1
Patch: 858c3f0079f987833fb22eba2c361d1a88ba4103

Timelineinfo

12/29/2015 🔍
12/29/2015 +0 days 🔍
12/29/2015 +0 days 🔍
01/03/2016 +5 days 🔍
01/04/2016 +1 days 🔍
01/04/2016 +0 days 🔍
01/05/2016 +1 days 🔍
01/08/2016 +3 days 🔍
01/12/2016 +4 days 🔍
07/02/2022 +2363 days 🔍

Sourcesinfo

Product: wireshark.org

Advisory: code.wireshark.org⛔
Researcher: Mateusz Jurczyk
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8738 (🔍)
GCVE (CVE): GCVE-0-2015-8738
GCVE (VulDB): GCVE-100-80082
SecurityFocus: 79815 - Wireshark Multiple Denial of Service Vulnerabilities
SecurityTracker: 1034551
Vulnerability Center: 55624 - Wireshark 2.0.0 Remote DoS in S7COMM Dissector - CVE-2015-8738, Medium

See also: 🔍

Entryinfo

Created: 01/05/2016 08:31
Updated: 07/02/2022 12:31
Changes: 01/05/2016 08:31 (68), 06/21/2018 08:53 (16), 07/02/2022 12:23 (6), 07/02/2022 12:31 (1)
Complete: 🔍
Cache ID: 216::103

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