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CVE-2023-2906

Wireshark CP2179 divide by zero

6.5 MediumFix available

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.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

2.79%Up 2.8 points since Aug 26, 2023
90%50%10%1%

What each source reports

NVD Score used 6.5

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.

Record
CVE-2023-2906
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-369
Updated
2026-11-02
CVE List No score

Wireshark CP2179 divide by zero

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.

Record
CVE-2023-2906
Weakness
CWE-369
Updated
2026-11-02
EUVDEUVD-2023-34352 No score

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.

Record
EUVD-2023-34352
Updated
2026-11-02
GitHub AdvisoriesGHSA-hhx4-xmf9-97g5 6.5

Due to a failure in validating the length provided by an attacker-crafted CP2179 packet,...

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.

Record
GHSA-hhx4-xmf9-97g5
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-369
Updated
2026-11-02
OSVAZL-28486 6.5

CVE-2023-2906 affecting package wireshark for versions less than 4.0.8-1

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.

Record
AZL-28486
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVAZL-44175 6.5

CVE-2023-2906 affecting package wireshark for versions less than 4.4.7-1

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.

Record
AZL-44175
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
Show 9 moreShow less
OSVDEBIAN-CVE-2023-2906 6.5

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.

Record
DEBIAN-CVE-2023-2906
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVOESA-2023-1652 7.5

wireshark security update

Wireshark is an open source tool for profiling network traffic and analyzing packets. Such a tool is often referred to as a network analyzer, network protocol analyzer or sniffer.

Security Fix(es):

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. (CVE-2023-2906)

iSCSI dissector crash in Wireshark 4.0.0 to 4.0.6 allows denial of service via packet injection or crafted capture file(CVE-2023-3649)

BT SDP dissector infinite loop in Wireshark 4.0.0 to 4.0.7 and 3.6.0 to 3.6.15 allows denial of service via packet injection or crafted capture file(CVE-2023-4511)

BT SDP dissector memory leak in Wireshark 4.0.0 to 4.0.7 and 3.6.0 to 3.6.15 allows denial of service via packet injection or crafted capture file(CVE-2023-4513)

Record
OESA-2023-1652
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2023-2906 6.5

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.

Record
UBUNTU-CVE-2023-2906
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVCLSA-2025-1765984777 No score

wireshark: Fix of CVE-2023-2906

  • CVE-2023-2906: fix for potential crash in cp2179 dissector (packet-cp2179.c)
Record
CLSA-2025-1765984777
Updated
2026-11-02
OSVCLSA-2026-1777390184 No score

wireshark: Fix of CVE-2023-2906

  • CVE-2023-2906: fix divide-by-zero in CP2179 timetag info response dissector
Record
CLSA-2026-1777390184
Updated
2026-11-02
OSV No score

Wireshark CP2179 divide by zero

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.

Record
CVE-2023-2906
Weakness
CWE-369
Updated
2026-11-02
OSVMGASA-2023-0275 No score

Updated wireshark packages fix security vulnerabilities

The updated wireshark packages fix security vulnerabilities:

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. (CVE-2023-2906)

BT SDP dissector infinite loop in Wireshark 4.0.0 to 4.0.7 and 3.6.0 to 3.6.15 allows denial of service via packet injection or crafted capture file. (CVE-2023-4511)

CBOR dissector crash in Wireshark 4.0.0 to 4.0.6 allows denial of service via packet injection or crafted capture file. (CVE-2023-4512)

BT SDP dissector memory leak in Wireshark 4.0.0 to 4.0.7 and 3.6.0 to 3.6.15 allows denial of service via packet injection or crafted capture file. (CVE-2023-4513)

Record
MGASA-2023-0275
Updated
2026-11-02
OSVopenSUSE-SU-2024:13184-1 No score

libwireshark16-4.0.8-2.1 on GA media

These are all security issues fixed in the libwireshark16-4.0.8-2.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:13184-1
Updated
2026-11-02
OSVSUSE-SU-2023:3778-1 No score

Security update for wireshark

This update for wireshark fixes the following issues:

  • Wireshark update to v3.6.16.
  • CVE-2023-4512: Fixed a bug in CBOR dissector which could lead to crash. (bsc#1214561)
  • CVE-2023-4511: Fixed a bug in BT SDP dissector which could lead to an infinite loop. (bsc#1214560)
  • CVE-2023-4513: Fixed a bug in BT SDP dissector which could lead to a memory leak. (bsc#1214562)
  • CVE-2023-2906: Fixed a bug in CP2179 dissector which could lead to crash. (bsc#1214652)
Record
SUSE-SU-2023:3778-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
wireshark
Azure Linux:2
 before 4.0.8-1
4.0.8-1
wireshark
Azure Linux:3
 before 4.4.7-1
4.4.7-1
wireshark
TuxCare:AlmaLinux:9.2
 before 1:3.4.10-4.el9.tuxcare.els1
1:3.4.10-4.el9.tuxcare.els1
wireshark-cli
TuxCare:AlmaLinux:9.2
 before 1:3.4.10-4.el9.tuxcare.els1
1:3.4.10-4.el9.tuxcare.els1
wireshark-devel
TuxCare:AlmaLinux:9.2
 before 1:3.4.10-4.el9.tuxcare.els1
1:3.4.10-4.el9.tuxcare.els1
wireshark
TuxCare:AlmaLinux:9.6
 before 1:3.4.10-7.el9_6.tuxcare.els4
1:3.4.10-7.el9_6.tuxcare.els4
wireshark-cli
TuxCare:AlmaLinux:9.6
 before 1:3.4.10-7.el9_6.tuxcare.els4
1:3.4.10-7.el9_6.tuxcare.els4
wireshark-devel
TuxCare:AlmaLinux:9.6
 before 1:3.4.10-7.el9_6.tuxcare.els4
1:3.4.10-7.el9_6.tuxcare.els4
wireshark
Debian:12
 before 4.0.11-1~deb12u1, plus listed versions
4.0.10-14.0.3-14.0.5-1~exp14.0.6-14.0.6-1~deb12u14.0.6-1~exp14.0.7-14.0.8-1
4.0.11-1~deb12u1
wireshark
Debian:13
 before 4.0.8-1
4.0.8-1
Show 20 moreShow less
Affected packages
PackageAffectedFixed
wireshark
Debian:14
 before 4.0.8-1
4.0.8-1
wireshark
Debian:11
From an advisory covering 47 CVEs
 before 3.4.16-0+deb11u1, plus listed versions
3.4.10-0+deb11u13.4.4-13.4.6-1~exp13.4.7-13.4.7-1~exp13.4.8-13.4.9-1
3.4.16-0+deb11u1
wireshark
Debian:12
From an advisory covering 9 CVEs
 before 4.0.11-1~deb12u1, plus listed versions
4.0.10-14.0.3-14.0.5-1~exp14.0.6-14.0.6-1~deb12u14.0.6-1~exp14.0.7-14.0.8-1
4.0.11-1~deb12u1
wireshark
Mageia:9
From an advisory covering 4 CVEs
 before 4.0.8-1.mga9
4.0.8-1.mga9
wireshark
openEuler:20.03-LTS-SP1
From an advisory covering 4 CVEs
 before 3.6.14-3.oe1
3.6.14-3.oe1
wireshark
openEuler:20.03-LTS-SP3
From an advisory covering 4 CVEs
 before 3.6.14-3.oe1
3.6.14-3.oe1
wireshark
openEuler:22.03-LTS
From an advisory covering 4 CVEs
 before 3.6.14-3.oe2203sp2
3.6.14-3.oe2203sp2
wireshark
openEuler:22.03-LTS-SP1
From an advisory covering 4 CVEs
 before 3.6.14-3.oe2203sp1
3.6.14-3.oe2203sp1
wireshark
openEuler:22.03-LTS-SP2
From an advisory covering 4 CVEs
 before 3.6.14-3.oe2203sp2
3.6.14-3.oe2203sp2
wireshark
SUSE:Linux Enterprise Module for Basesystem 15 SP4
From an advisory covering 4 CVEs
 before 3.6.16-150000.3.100.1
3.6.16-150000.3.100.1
wireshark
SUSE:Linux Enterprise Module for Basesystem 15 SP5
From an advisory covering 4 CVEs
 before 3.6.16-150000.3.100.1
3.6.16-150000.3.100.1
wireshark
SUSE:Linux Enterprise Module for Desktop Applications 15 SP4
From an advisory covering 4 CVEs
 before 3.6.16-150000.3.100.1
3.6.16-150000.3.100.1
wireshark
SUSE:Linux Enterprise Module for Desktop Applications 15 SP5
From an advisory covering 4 CVEs
 before 3.6.16-150000.3.100.1
3.6.16-150000.3.100.1
wireshark
SUSE:Manager Proxy 4.2
From an advisory covering 4 CVEs
 before 3.6.16-150000.3.100.1
3.6.16-150000.3.100.1
wireshark
SUSE:Manager Server 4.2
From an advisory covering 4 CVEs
 before 3.6.16-150000.3.100.1
3.6.16-150000.3.100.1
wireshark
openSUSE:Leap 15.4
From an advisory covering 4 CVEs
 before 3.6.16-150000.3.100.1
3.6.16-150000.3.100.1
wireshark
openSUSE:Leap 15.5
From an advisory covering 4 CVEs
 before 3.6.16-150000.3.100.1
3.6.16-150000.3.100.1
wireshark
Ubuntu:Pro:20.04:LTS
 All versions, plus listed versions
3.0.5-13.0.7-13.2.1-13.2.2-13.2.3-13.2.3-1ubuntu0.1~esm13.2.3-1ubuntu0.1~esm2
 None known
wireshark
Ubuntu:Pro:22.04:LTS
 All versions, plus listed versions
3.4.7-1~exp13.4.9-13.6.2-1ubuntu13.6.2-23.6.2-2ubuntu0.1~esm1
 None known
wireshark
openSUSE:Tumbleweed
From an advisory covering 4 CVEs
 before 4.0.8-2.1
4.0.8-2.1

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-2906 is a medium vulnerability (CVSS 6.5) in Wireshark, published August 25, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.79%, the 86th percentile. Fixed in wireshark 4.0.8-1.

References

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