#VU24328 Input validation error in Wireshark - CVE-2020-7045

Vulnerability identifier: #VU24328

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-2020-7045

CWE-ID: CWE-20

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 insufficient validation of user-supplied input within the BT ATT dissector. A remote attacker can send specially crafted data and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Wireshark: 3.0.0 - 3.0.7

---

External links
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=16258
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=01f261de41f4dd3233ef578e5c0ffb9c25c7d14d
https://www.wireshark.org/security/wnpa-sec-2020-02.html

---

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.