TI-2018-10283 Aliases CVE-2018-14340 GHSA-5mf4-rfcc-fxpq

In Wireshark 2.6.0 to 2.6.1, 2.4.0 to 2.4.7, and 2.2.0 to 2.2.15, dissectors that support…

LOW 39CWE-125Published 2018-07-19 · Updated 2024-08-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Partial Red Hat: 6 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-125 and the CVSS impact.

Summary

In Wireshark 2.6.0 to 2.6.1, 2.4.0 to 2.4.7, and 2.2.0 to 2.2.15, dissectors that support zlib decompression could crash. This was addressed in epan/tvbuff_zlib.c by rejecting negative lengths to avoid a buffer over-read.

Why it matters now

EPSS 0.03472 89th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Partial Red Hat: 1 advisoryRed Hat: 6 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:wireshark:wireshark::::::::	2.2.0 – 2.2.15; 2.4.0 – 2.4.7; 2.6.0 – 2.6.1	Vulnerable	Wireshark Foundation
cpe:2.3:o:debian:debian_linux:8.0:::::::*	8.0	Vulnerable	Debian

cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:* Versions 2.2.0 – 2.2.15; 2.4.0 – 2.4.7; 2.6.0 – 2.6.1 Vulnerable ·Wireshark Foundation
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian

Remediation

Red Hat 1 advisory

RHSA-2020:1047 Released 2020-03-31 · Red Hat rating Moderate
wireshark security and bug fix update
- Red Hat Enterprise Linux Client (v. 7) wireshark-1.10.14-24.el7, wireshark-gnome-1.10.14-24.el7
- Red Hat Enterprise Linux Client Optional (v. 7) wireshark-devel-1.10.14-24.el7
- Red Hat Enterprise Linux Server (v. 7) wireshark-1.10.14-24.el7, wireshark-1.10.14-24.el7.ppc, wireshark-gnome-1.10.14-24.el7
- Red Hat Enterprise Linux Server Optional (v. 7) wireshark-devel-1.10.14-24.el7, wireshark-devel-1.10.14-24.el7.ppc
- Red Hat Enterprise Linux Workstation (v. 7) wireshark-1.10.14-24.el7, wireshark-gnome-1.10.14-24.el7
- Red Hat Enterprise Linux Workstation Optional (v. 7) wireshark-devel-1.10.14-24.el7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Product	Status	Plan or fix
Red Hat Enterprise Linux 6	Affected	No fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)	Fixed	RHSA-2020:1047
Red Hat Enterprise Linux Client Optional (v. 7)	Fixed	RHSA-2020:1047
Red Hat Enterprise Linux Server (v. 7)	Fixed	RHSA-2020:1047
Red Hat Enterprise Linux Server Optional (v. 7)	Fixed	RHSA-2020:1047
Red Hat Enterprise Linux Workstation (v. 7)	Fixed	RHSA-2020:1047
Red Hat Enterprise Linux Workstation Optional (v. 7)	Fixed	RHSA-2020:1047

Not affected: 1 product

Red Hat Enterprise Linux 8

Timeline

2026-10-02 Threatist record created from CVE-2018-14340
2026-10-03 Alias added: GHSA-5mf4-rfcc-fxpq

References

Exploit 1

https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14675

Advisory 3

Other 1

https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=672d882a53f96730e4ef1e5b1639c585823b0df8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences