NULL pointer dereference in Wireshark



| Updated: 2020-08-04
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-10901
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Wireshark
Server applications / IDS/IPS systems, Firewalls and proxy servers

Fedora
Operating systems & Components / Operating system

Vendor Wireshark.org
Fedoraproject

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU33466

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-2019-10901

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

CPE2.3 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=15620
https://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=cf801a25074f76dc3ae62d8ec53ace75f56ce2cd
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-2019-17.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.



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