Buffer over-read in Wireshark - CVE-2018-11362

Vulnerability identifier: #VU13034

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-2018-11362

CWE-ID: CWE-126

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-ldss.c due to buffer over-read upon encountering a missing '' character. A remote attacker can inject a malformed packet onto the wire or convince someone to read a malformed packet trace file, trigger memory corruption and cause the LDSS dissector to crash.

Wireshark
Arch Linux
Debian Linux
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Opensuse
Fedora
wireshark (Red Hat package)
wireshark (Alpine package)
openSUSE Leap
wireshark

Update to version 2.6.1.

wireshark (Red Hat package) - update to 1.10.14-24.el7
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-2018-25.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
• Debian update for wireshark
• Red Hat Enterprise Linux 7 update for wireshark
• OpenSUSE Linux update for wireshark
• Buffer over-read in wireshark (Alpine package)
• Fedora 27 update for wireshark
• Fedora 28 update for wireshark