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CVE-2021-22222

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via...

7.5 HighFix available

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via packet injection or crafted capture file

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
High

Exploit likelihood

1.91%Down 2.6 points since Jun 8, 2021
90%50%10%1%

What each source reports

CVE List Score used 7.5

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via packet injection or crafted capture file

Record
CVE-2021-22222
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
EUVDEUVD-2021-9368 7.5

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via packet injection or crafted capture file

Record
EUVD-2021-9368
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
2026-11-03
GitHub AdvisoriesGHSA-jpq9-r35r-969q 7.5

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via...

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via packet injection or crafted capture file

Record
GHSA-jpq9-r35r-969q
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-835
Updated
2026-11-02
NVD 7.5

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via packet injection or crafted capture file

Record
CVE-2021-22222
CVSS 3.1
7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0
5.0 MediumAV:N/AC:L/Au:N/C:N/I:N/A:P
Weakness
CWE-835
Updated
2026-11-02
OSVALPINE-CVE-2021-22222 7.5

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via packet injection or crafted capture file

Record
ALPINE-CVE-2021-22222
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
2026-11-03
OSVAZL-7406 7.5

CVE-2021-22222 affecting package wireshark for versions less than 3.4.14-1

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via packet injection or crafted capture file

Record
AZL-7406
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
Show 4 moreShow less
OSV 7.5

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via packet injection or crafted capture file

Record
CVE-2021-22222
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
OSVDEBIAN-CVE-2021-22222 7.5

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via packet injection or crafted capture file

Record
DEBIAN-CVE-2021-22222
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-2021-22222 7.5

Infinite loop in DVB-S2-BB dissector in Wireshark 3.4.0 to 3.4.5 allows denial of service via packet injection or crafted capture file

Record
UBUNTU-CVE-2021-22222
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
OSVMGASA-2021-0279 No score

Updated wireshark packages fix a security vulnerability

The DVB-S2-BB dissector could go into an infinite loop.

Record
MGASA-2021-0279
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
wireshark
Alpine:v3.13
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Alpine:v3.14
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Alpine:v3.15
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Alpine:v3.16
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Alpine:v3.17
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Alpine:v3.18
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Alpine:v3.19
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Alpine:v3.20
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Alpine:v3.21
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Alpine:v3.22
 3.4.0 up to 3.4.6-r0
3.4.6-r0
Show 17 moreShow less
Affected packages
PackageAffectedFixed
wireshark
Alpine:v3.23
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Alpine:v3.24
 3.4.0 up to 3.4.6-r0
3.4.6-r0
wireshark
Azure Linux:2
 before 3.4.14-1
3.4.14-1
wireshark
Debian:12
 before 3.4.7-1
3.4.7-1
wireshark
Debian:13
 before 3.4.7-1
3.4.7-1
wireshark
Debian:14
 before 3.4.7-1
3.4.7-1
wireshark
Debian:11
From an advisory covering 12 CVEs
 before 3.4.10-0+deb11u1, plus listed versions
3.4.4-13.4.6-1~exp13.4.7-13.4.7-1~exp13.4.8-13.4.9-1
3.4.10-0+deb11u1
wireshark
Mageia:8
 before 3.4.6-1.mga8
3.4.6-1.mga8
wireshark
Ubuntu:Pro:14.04:LTS
 All versions, plus listed versions
1.10.2-11.10.3-11.10.5-1ubuntu11.10.5-21.10.6-1
Show 9 moreShow less
1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.12.6.3-1~ubuntu14.04.12.6.4-2~ubuntu14.04.12.6.5-1~ubuntu14.04.12.6.6-1~ubuntu14.04.02.6.8-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm12.6.10-1~ubuntu14.04.0~esm22.6.10-1~ubuntu14.04.0~esm3
 None known
wireshark
Ubuntu:Pro:16.04:LTS
 All versions, plus listed versions
1.12.7+g7fc8978-11.12.8+g5b6e543-22.0.1+g59ea380-3build12.0.2+ga16e22e-12.2.6+g32dac6a-2ubuntu0.16.04
Show 8 moreShow less
2.6.3-1~ubuntu16.04.12.6.4-2~ubuntu16.04.02.6.5-1~ubuntu16.04.02.6.6-1~ubuntu16.04.02.6.8-1~ubuntu16.04.02.6.10-1~ubuntu16.04.02.6.10-1~ubuntu16.04.0+esm12.6.10-1~ubuntu16.04.0+esm2
 None known
wireshark
Ubuntu:Pro:18.04:LTS
 All versions, plus listed versions
2.4.2-12.4.3-12.4.4-12.4.5-12.6.3-1~ubuntu18.04.1
Show 7 moreShow less
2.6.4-2~ubuntu18.04.02.6.5-1~ubuntu18.04.02.6.6-1~ubuntu18.04.02.6.8-1~ubuntu18.04.02.6.10-1~ubuntu18.04.02.6.10-1~ubuntu18.04.0+esm12.6.10-1~ubuntu18.04.0+esm2
 None known
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
Ubuntu:24.04:LTS
 All versions, plus listed versions
4.0.8-14.0.10-14.0.11-14.2.0-14.2.2-14.2.2-1.1build14.2.2-1.1build24.2.2-1.1build3
 None known
wireshark
Ubuntu:25.10
 All versions, plus listed versions
4.4.5-14.4.6-24.4.6-2build14.4.7-1
 None known
wireshark
Ubuntu:26.10
 All versions, plus listed versions
4.6.4-14.6.6-14.6.6-24.6.6-2build1
 None known
wireshark
Ubuntu:26.04:LTS
 All versions, plus listed versions
4.4.7-14.6.0-14.6.1-24.6.2-34.6.3-14.6.4-1
 None known

History

History
RecordedChangedSources
affected, facts
affected, aliases, referencesOSV
aliases, productsEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2021-22222 is a high vulnerability (CVSS 7.5) in The Wireshark Foundation Wireshark, published June 7, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.91%, the 79th percentile. Fixed in wireshark 3.4.6-r0.

References

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