Wireshark resolved 3 Security Flaws that allowed DoS

Wireshark group has resolved three severe vulnerabilities which could be misused to make a system crash and denial of service (DoS) attacks. All the three vulnerabilities are found to be with a base score of 7.5 severity level. All of these were discovered by Cisco.


Throughout the end of the week, the group in charge of keeping the security of the open-source packet analyzer up to scratch issued security warnings depicting the bugs.

Wireshark is a free and open source network protocol analyzer. These security flaws were discovered by the largest network hardware manufacturing firm – CISCO . All of these could trigger DoS attacks upon misuse.

The team at Cisco also founded them to cause the system crash of the same type.

All these vulnerabilities allow an attacker to inject the malicious packet into the network. If the user opens the file having this malicious packet in it, this could crash the system resulting in a DoS state.

Cisco reported that-

“To exploit the vulnerability, the attacker may use misleading language and instructions to convince a user to open a malicious packet trace file. To inject malformed packets that the Wireshark application may attempt to parse, the attacker may need access to the trusted, internal network where the targeted system resides. This access requirement may reduce the likelihood of a successful exploit.”

Followed as CVE-2018-16056, CVE-2018-16057, and CVE-2018-16058, the three bugs can possibly make genuine interruption to clients running software versions 2.6.0 to 2.6.2, 2.4.0 to 2.4.8, and 2.2.0 to 2.2.16.

1-  First vulnerability

The first vulnerability is CVE-2018-16056 which is present in the Bluetooth Attribute Protocol (ATT) dissector part of Wireshark.

The epan/dissectors/parcel btatt.c source code file of Wireshark does not check that a dissector for a particular universally unique identifier (UUID) exists which licenses unauthenticated, remote assailants to send created packets into a system, making the segment crash.

Moreover, threat performing artists could persuade a client to open a deformed parcel, prompting similar results.

2- Second vulnerability

The second vulnerability is CVE-2018-16057 which is a security defect in the Radiotap dissector segment of Wireshark.

As indicated by Cisco’s security warning, there are lacking bound checks in the segment’s source document, which can be abused using distorted bundles.

Unauthenticated, remote assailants can outfit this security imperfection to cause a DoS condition on an objective framework.

3- Third vulnerability

Last vulnerability is CVE-2018-16058 which was found inside the Wireshark Audio/Video Distribution Transport Protocol (AVDTP) dissector.

The epan/dissectors/bundle btavdtp.c source code record of the influenced programming inappropriately instates an information structure, prompting the likelihood of malevolent parcels misusing the framework and causing a crash.

Proof-of-concept (PoC) code has been discharged to the general population which exhibits how to abuse every one of the security vulnerabilities.

The Wireshark group has recognized the presence of the security defects and has released updates to fix the issues.

Clients of Wireshark should update their application to versions 2.6.3, 2.4.9, 2.2.17 or later to shield themselves from the danger.

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