CVE-2021-39929
published 2021-11-19CVE-2021-39929: Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted…
PriorityP338high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
3.81%
90.0th percentile
Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | wireshark | < wireshark 3.6.0-1 (bookworm) | wireshark 3.6.0-1 (bookworm) |
| fedoraproject | fedora | — | — |
| fedoraproject | fedora | — | — |
| msrc | cbl2_wireshark_3.4.14-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| wireshark | wireshark | >= 0 < 3.4.10-0+deb11u1 | 3.4.10-0+deb11u1 |
| wireshark | wireshark | >= 0 < 3.6.0-1 | 3.6.0-1 |
| wireshark | wireshark | >= 0 < 3.6.0-1 | 3.6.0-1 |
| wireshark | wireshark | >= 0 < 3.6.0-1 | 3.6.0-1 |
| wireshark | wireshark | >= 0 < 2.6.10-1~ubuntu14.04.0~esm3 | 2.6.10-1~ubuntu14.04.0~esm3 |
| wireshark | wireshark | >= 0 < 2.6.10-1~ubuntu16.04.0+esm2 | 2.6.10-1~ubuntu16.04.0+esm2 |
| wireshark | wireshark | >= 0 < 2.6.10-1~ubuntu18.04.0+esm2 | 2.6.10-1~ubuntu18.04.0+esm2 |
| wireshark | wireshark | >= 0 < 3.2.3-1ubuntu0.1~esm2 | 3.2.3-1ubuntu0.1~esm2 |
| wireshark | wireshark | >= 0 < 3.6.2-2ubuntu0.1~esm1 | 3.6.2-2ubuntu0.1~esm1 |
| wireshark | wireshark | 3.2.0 – 3.2.17 | — |
| wireshark | wireshark | 3.4.0 – 3.4.9 | — |
| wireshark_foundation | wireshark | — | — |
| wireshark_foundation | wireshark | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
osv7.5HIGH
vendor_debian7.5HIGH
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
vendor_ubuntu7.5HIGH
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Ubuntu
Wireshark vulnerabilities
vendor_ubuntu·2025-06-04·CVSS 7.5
CVE-2021-4182 [HIGH] Wireshark vulnerabilities
Title: Wireshark vulnerabilities
Summary: Several security issues were fixed in Wireshark.
It was discovered that Wireshark did not correctly handle recursion. If a
user or system were tricked into opening a specially crafted file, an
attacker could possibly use this issue to cause a denial of service. This
issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS
and Ubuntu 20.04 LTS. (CVE-2021-39929)
Roman Donchenko discovered that Wireshark did not correctly handle
parsing certain files. If a user or system were tricked into opening a
specially crafted file, an attacker could possibly use this issue to
cause a denial of service. This issue only affected Ubuntu 20.04 LTS.
(CVE-2021-4182)
It was discovered that Wireshark did not correctly handle parsing
certain files. I
Red Hat
wireshark: bluetooth DHT dissector crash
vendor_redhat·2021-11-17·CVSS 7.5
CVE-2021-39929 [HIGH] CWE-674 wireshark: bluetooth DHT dissector crash
wireshark: bluetooth DHT dissector crash
Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
A flaw was found in Wireshark. A process failure on crafted or malformed Bluetooth DHT input can cause a denial of service.
Package: wireshark (Red Hat Enterprise Linux 6) - Not affected
Package: wireshark (Red Hat Enterprise Linux 7) - Not affected
Package: wireshark (Red Hat Enterprise Linux 8) - Not affected
Package: wireshark (Red Hat Enterprise Linux 9) - Not affected
Microsoft
Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
vendor_msrc·2021-11-09·CVSS 7.5
CVE-2021-39929 [HIGH] CWE-674 Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Marine
Debian
CVE-2021-39929: wireshark - Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4....
vendor_debian·2021·CVSS 7.5
CVE-2021-39929 [HIGH] CVE-2021-39929: wireshark - Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4....
Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
Scope: local
bookworm: resolved (fixed in 3.6.0-1)
bullseye: resolved (fixed in 3.4.10-0+deb11u1)
forky: resolved (fixed in 3.6.0-1)
sid: resolved (fixed in 3.6.0-1)
trixie: resolved (fixed in 3.6.0-1)
OSV
wireshark vulnerabilities
osv·2025-06-04·CVSS 7.5
CVE-2021-39929 [HIGH] wireshark vulnerabilities
wireshark vulnerabilities
It was discovered that Wireshark did not correctly handle recursion. If a
user or system were tricked into opening a specially crafted file, an
attacker could possibly use this issue to cause a denial of service. This
issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS
and Ubuntu 20.04 LTS. (CVE-2021-39929)
Roman Donchenko discovered that Wireshark did not correctly handle
parsing certain files. If a user or system were tricked into opening a
specially crafted file, an attacker could possibly use this issue to
cause a denial of service. This issue only affected Ubuntu 20.04 LTS.
(CVE-2021-4182)
It was discovered that Wireshark did not correctly handle parsing
certain files. If a user or system were tricked into opening a specially
crafted f
GHSA
GHSA-jcx2-5qw3-59p6: Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3
ghsa_unreviewed·2022-05-24
CVE-2021-39929 [HIGH] CWE-674 GHSA-jcx2-5qw3-59p6: Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3
Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
OSV
CVE-2021-39929: Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3
osv·2021-11-19·CVSS 7.5
CVE-2021-39929 [HIGH] CVE-2021-39929: Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3
Uncontrolled Recursion in the Bluetooth DHT dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39929.jsonhttps://gitlab.com/wireshark/wireshark/-/issues/17651https://lists.debian.org/debian-lts-announce/2021/12/msg00015.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/https://security.gentoo.org/glsa/202210-04https://www.debian.org/security/2021/dsa-5019https://www.wireshark.org/security/wnpa-sec-2021-07.htmlhttps://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39929.jsonhttps://gitlab.com/wireshark/wireshark/-/issues/17651https://lists.debian.org/debian-lts-announce/2021/12/msg00015.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH/https://security.gentoo.org/glsa/202210-04https://www.debian.org/security/2021/dsa-5019https://www.wireshark.org/security/wnpa-sec-2021-07.html
2021-11-19
Published