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Fencer Vulns
medium 6.5

CVE-2023-2906 json

Wireshark CP2179 divide by zero

published 2023-08-25 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-34352

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.8%
EPSS 2.8% chance of exploitation in 30 days, percentile 86%
public exploits
0
none known

Summary

Due to a failure in validating the length provided by an attacker-crafted CP2179 packet, Wireshark versions 2.0.0 through 4.0.7 is susceptible to a divide by zero allowing for a denial of service attack.

Patch / fix

  • wireshark Debian 12 4.0.11-1~deb12u1
  • wireshark Debian 14, Debian 13 4.0.8-1

debian advisories DEBIAN-CVE-2023-2906

  • wireshark SLE Module for Desktop Applications 15 SP5, SLE Module for Desktop Applications 15 SP4, SLE Module for Basesystem 15 SP5 +5 more 3.6.16-150000.3.100.1

suse advisories SUSE-SU-2023:3778-1

  • wireshark openSUSE Tumbleweed 4.0.8-2.1

opensuse advisories openSUSE-SU-2024:13184-1

  • wireshark CBL-Mariner 2.0 4.0.8-1
  • wireshark Azure Linux 3.0 4.4.7-1

azure linux advisories AZL-28486AZL-44175

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-2023-2906 updated cvss 6.5

wireshark: possible Denial of Service via crafted package

  • Red Hat Enterprise Linux 6 wireshark, wireshark-gnome
    affected: workaround, no fix available
  • Red Hat Enterprise Linux 7 wireshark, wireshark-gnome Red Hat Enterprise Linux 8 wireshark, wireshark-cli Red Hat Enterprise Linux 9 wireshark, wireshark-cli
    affected: workaround, no fix planned “Will not fix”
  • Red Hat OpenShift Container Platform 4 wireshark, openshift4/network-tools-rhel8
    not affected: vulnerable code not present

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
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

2.79% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • gitlab.com https://gitlab.com/wireshark/wireshark/-/issues/19229 referenced PoC, tagged "exploit" by a source, unverified
  • takeonme.org https://takeonme.org/cves/CVE-2023-2906.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
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

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.