Memory leak in Wireshark



| Updated: 2020-12-19
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-26419
CWE-ID CWE-401
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Wireshark
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor Wireshark.org

Security Bulletin

This security bulletin contains information about 1 vulnerabilities.

Updated: 19.12.2020

Changed bulletin patch status to patched, added fixed versions.

1) Memory leak

EUVDB-ID: #VU49034

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 - Missing release of memory after effective lifetime

Exploit availability: No

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

CPE2.3 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


Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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