CVE-2021-39923 — Excessive Iteration in Wireshark

CWE-834 — Excessive IterationCWE-476 — NULL Pointer DereferenceCWE-400 — Uncontrolled Resource Consumption7 documents7 sources
Severity
7.5HIGHNVD
EPSS
2.3%
top 15.39%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
WiresharkWireshark Foundation WiresharkDebian Linux
Timeline
PublishedNov 19
Latest updateNov 20

Description

Large loop in the PNRP 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

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

▶Debianwireshark/wireshark< 3.4.10-0+deb11u1+3
▶NVDwireshark/wireshark3.2.0 — 3.2.17+1
▶CVEListV5wireshark_foundation/wireshark>=3.2.0, <3.2.18, >=3.4.0, <3.4.10+1

Also affects: Debian Linux 10.0, 11.0, 9.0

Patches

Patch: gitlab.com ↗Patch: gitlab.com ↗

🔴Vulnerability Details

3
GHSA
GHSA-v75m-35ph-56m2: NULL pointer exception in the IPPUSB dissector in Wireshark 3↗2021-11-20
▶
CVEList
CVE-2021-39923: Large loop in the PNRP dissector in Wireshark 3↗2021-11-19
▶
OSV
CVE-2021-39923: Large loop in the PNRP dissector in Wireshark 3↗2021-11-19
▶

📋Vendor Advisories

3
Red Hat
wireshark: PNRP dissector large loop↗2021-11-17
▶
Microsoft
Large loop in the PNRP 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↗2021-11-09
▶
Debian
CVE-2021-39923: wireshark - Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17...↗2021
▶
CVE-2021-39923 — Excessive Iteration in Wireshark | cvebase