CVE-2021-39920 — NULL Pointer Dereference in Wireshark

CWE-476 — NULL Pointer Dereference7 documents7 sources
Severity
7.5HIGHNVD
EPSS
0.5%
top 32.96%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
WiresharkWireshark Foundation WiresharkFedoraproject Fedora
Timeline
PublishedNov 18
Latest updateNov 19

Description

NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 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 Packages3 packages

▶NVDwireshark/wireshark3.4.0 — 3.4.10
▶Debianwireshark/wireshark< 3.4.10-0+deb11u1+3
▶CVEListV5wireshark_foundation/wireshark>=3.4.0, <3.4.10

Also affects: Fedora 34, 35

🔴Vulnerability Details

3
GHSA
GHSA-v5f8-gc5j-r8rv: NULL pointer exception in the IPPUSB dissector in Wireshark 3↗2021-11-19
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CVEList
CVE-2021-39920: NULL pointer exception in the IPPUSB dissector in Wireshark 3↗2021-11-18
▶
OSV
CVE-2021-39920: NULL pointer exception in the IPPUSB dissector in Wireshark 3↗2021-11-18
▶

📋Vendor Advisories

3
Red Hat
wireshark: IPPUSB dissector crash↗2021-11-17
▶
Microsoft
NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file↗2021-11-09
▶
Debian
CVE-2021-39920: wireshark - NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allow...↗2021
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CVE-2021-39920 — NULL Pointer Dereference in Wireshark | cvebase