NULL pointer dereference in Wireshark

1) NULL pointer dereference

EUVDB-ID: #VU33466

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-10901

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

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 LDSS dissector could crash. This was addressed in epan/dissectors/packet-ldss.c by handling file digests properly.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Wireshark: 3.0.0

Fedora: 3.0.0 - 30

External links

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00027.html
http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00027.html
http://www.securityfocus.com/bid/107834
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=15620
http://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=cf801a25074f76dc3ae62d8ec53ace75f56ce2cd
http://lists.debian.org/debian-lts-announce/2019/05/msg00034.html
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4LYIOOQIMFQ3PA7AFBK4DNXHISTEYUC5/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PU3QA2DUO3XS24QE24CQRP4A4XQQY76R/
http://usn.ubuntu.com/3986-1/
http://www.wireshark.org/security/wnpa-sec-2019-17.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.