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Fencer Vulns
medium 6.3

CVE-2023-6174 json

Out-of-bounds Read in Wireshark

published 2023-11-16 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-58424

cvss
6.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 55%
public exploits
0
none known

Summary

SSH dissector crash in Wireshark 4.0.0 to 4.0.10 allows denial of service via packet injection or crafted capture file

Patch / fix

  • Wireshark Foundation Wireshark 4.0.11
  • wireshark Debian 12 4.0.11-1~deb12u1
  • wireshark Debian 14, Debian 13 4.0.11-1

debian advisories DEBIAN-CVE-2023-6174

  • wireshark SLE Module for Desktop Applications 15 SP6, SLE Module for Basesystem 15 SP6, openSUSE Leap 15.6 4.2.6-150600.18.6.1

suse advisories SUSE-SU-2024:3165-1

  • wireshark openSUSE Tumbleweed 4.0.11-2.1

opensuse advisories openSUSE-SU-2024:13458-1

  • wireshark Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 4.0.11-r0

alpine advisories ALPINE-CVE-2023-6174

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • wireshark Azure Linux 3.0 4.4.7-1

azure linux advisories AZL-37057

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-6174 updated cvss 4.3

wireshark: SSH dissector invalid read of memory blocks

  • Red Hat Enterprise Linux 6 wireshark, wireshark-gnome Red Hat Enterprise Linux 7 wireshark, wireshark-gnome
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 8 wireshark, wireshark-cli Red Hat Enterprise Linux 9 wireshark, wireshark-cli
    affected: no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
16 mo ago

Exploit prediction

0.75% chance of exploitation in the next 30 days, higher than 55% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

  • Wireshark Foundation Wireshark

Classification

Weakness
  • CWE-125 Out-of-bounds Read
  • CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.