CVE-2021-4182 — Infinite Loop in Wireshark

CWE-835 — Infinite LoopCWE-20 — Improper Input ValidationCWE-74 — Injection9 documents8 sources
Severity
7.5HIGHNVD
EPSS
0.0%
top 87.38%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
WiresharkWireshark Foundation WiresharkFedoraproject Fedora+2 more
Timeline
PublishedDec 30
Latest updateJun 4

Description

Crash in the RFC 7468 dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages5 packages

▶NVDwireshark/wireshark3.4.0 — 3.4.11+1
▶Debianwireshark/wireshark< 3.4.16-0+deb11u1+3
▶CVEListV5wireshark_foundation/wireshark=3.6.0, >=3.4.0, <3.4.10+1
▶NVDoracle/http_server12.2.1.3.0, 12.2.1.4.0+1

Also affects: Fedora 34, 35

Patches

Patch: www.oracle.com ↗Patch: www.oracle.com ↗

🔴Vulnerability Details

4
OSV
wireshark vulnerabilities↗2025-06-04
▶
GHSA
GHSA-3hwx-vc7v-fw2m: Crash in the RFC 7468 dissector in Wireshark 3↗2021-12-31
▶
CVEList
CVE-2021-4182: Crash in the RFC 7468 dissector in Wireshark 3↗2021-12-30
▶
OSV
CVE-2021-4182: Crash in the RFC 7468 dissector in Wireshark 3↗2021-12-30
▶

📋Vendor Advisories

4
Ubuntu
Wireshark vulnerabilities↗2025-06-04
▶
Red Hat
wireshark: RFC 7468 file parser infinite loop↗2021-12-29
▶
Microsoft
Crash in the RFC 7468 dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows denial of service via packet injection or crafted capture file↗2021-12-14
▶
Debian
CVE-2021-4182: wireshark - Crash in the RFC 7468 dissector in Wireshark 3.6.0 and 3.4.0 to 3.4.10 allows de...↗2021
▶
CVE-2021-4182 — Infinite Loop in Wireshark | cvebase