Null pointer dereference in Wireshark - CVE-2018-11356

Vulnerability identifier: #VU13028

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2018-11356

CWE-ID: CWE-476

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in epan/dissectors/packet-dns.c due to NULL pointer dereference. A remote attacker can inject a malformed packet onto the wire or convince someone to read a malformed packet trace file and cause the DNS dissector to crash.

Wireshark
Arch Linux
Opensuse
Fedora
wireshark (Alpine package)
openSUSE Leap
wireshark

The vulnerability is addressed in the following versions: 2.6.1, 2.4.7, 2.2.15.

wireshark (Alpine package) - update to 2.2.15-r0
wireshark - addressed in versions 2.6.1-1.fc27, 2.6.1-1.fc28

• https://www.wireshark.org/security/wnpa-sec-2018-29.html

• Multiple vulnerabilities in Wireshark
• Arch Linux update for wireshark-cli
• Arch Linux update for wireshark-common
• Arch Linux update for wireshark-qt
• Arch Linux update for wireshark-gtk
• OpenSUSE Linux update for wireshark
• OpenSUSE Linux update for wireshark
• Null pointer dereference in wireshark (Alpine package)
• Fedora 27 update for wireshark
• Fedora 28 update for wireshark