Improper input validation in Wireshark - CVE-2018-14340

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Main Vulnerability Database Vulnerabilities #VU14108

Improper input validation in Wireshark - CVE-2018-14340

Published: July 30, 2018


Vulnerability identifier: #VU14108
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-2018-14340
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

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

The weakness exists due to a flaw when handling malicious input. A remote attacker can inject a malformed packet onto the wire or trick the victim into reading a malformed packet trace file and cause the dissectors that support zlib decompression to crash.


Affected software

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

How to mitigate CVE-2018-14340

The vulnerability is addressed in the versions 2.6.2, 2.4.8, 2.2.16

Wireshark - addressed in versions 2.2.16, 2.4.8, 2.6.2
wireshark (Red Hat package) - update to 1.10.14-24.el7
wireshark (Alpine package) - addressed in versions 2.4.8-r0, 2.6.2-r0
wireshark - addressed in versions 2.6.2-1.fc27, 2.6.2-1.fc28

External References

Related Security Bulletins