Vulnerability identifier: #VU33501

Vulnerability 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-2018-9258

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Debian Linux
Operating systems & Components / Operating system

Vendor: Debian

Description

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

In Wireshark 2.4.0 to 2.4.5, the TCP dissector could crash. This was addressed in epan/dissectors/packet-tcp.c by preserving valid data sources.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Debian Linux: 7.0

---

External links
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14472
http://code.wireshark.org/review/gitweb?p=wireshark.git;a=commit;h=2d4695de1477df60b0188fd581c0c279db601978
http://lists.debian.org/debian-lts-announce/2018/05/msg00019.html
http://www.wireshark.org/security/wnpa-sec-2018-21.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.