#VU33462 Resource management error in Wireshark and Fedora - CVE-2019-10894

Vulnerability identifier: #VU33462

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-10894

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Wireshark
Server applications / IDS/IPS systems, Firewalls and proxy servers
Fedora
Operating systems & Components / Operating system

Vendor: Wireshark.org
Fedoraproject

Description

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

In Wireshark 2.4.0 to 2.4.13, 2.6.0 to 2.6.7, and 3.0.0, the GSS-API dissector could crash. This was addressed in epan/dissectors/packet-gssapi.c by ensuring that a valid dissector is called.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Wireshark: 3.0.0

Fedora: 3.0.0 - 30

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External links
https://lists.opensuse.org/opensuse-security-announce/2019-05/msg00022.html
https://lists.opensuse.org/opensuse-security-announce/2019-05/msg00027.html
https://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
https://www.securityfocus.com/bid/107834
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15613
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=b20e5d8aae2580e29c83ddaf0b6b2e640603e4aa
https://lists.debian.org/debian-lts-announce/2019/05/msg00034.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4LYIOOQIMFQ3PA7AFBK4DNXHISTEYUC5/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PU3QA2DUO3XS24QE24CQRP4A4XQQY76R/
https://usn.ubuntu.com/3986-1/
https://www.wireshark.org/security/wnpa-sec-2019-14.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.