#VU49034 Memory leak in Wireshark - CVE-2020-26419

Vulnerability identifier: #VU49034

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-26419

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Wireshark
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Wireshark.org

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the dissection engine in Wireshark 3.4.0 allows denial of service via packet injection or crafted capture file. A remote attacker can perform a denial of service attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Wireshark: 3.4.0

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External links
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26419.json
https://gitlab.com/wireshark/wireshark/-/issues/17032
https://www.wireshark.org/security/wnpa-sec-2020-19.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.