CVE-2017-9353

HIGH

Wireshark 2.2.0-2.2.6 - Denial of Service in IPv6 Dissector

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-9353. PoCs published by OSS-Fuzz.

AI-analyzed exploit summary This exploit triggers a null pointer dereference in Wireshark's IPv6 multicast address handling, leading to a denial-of-service (DoS) condition. The PoC is a malformed pcap file that causes a runtime error in `wsutil/inet_ipv6.h` when processed by TShark.

Description

In Wireshark 2.2.0 to 2.2.6, the IPv6 dissector could crash. This was addressed in epan/dissectors/packet-ipv6.c by validating an IPv6 address.

Exploits (1)

exploitdb WORKING POC VERIFIED
by OSS-Fuzz · textdosmultiple
https://www.exploit-db.com/exploits/42123

This exploit triggers a null pointer dereference in Wireshark's IPv6 multicast address handling, leading to a denial-of-service (DoS) condition. The PoC is a malformed pcap file that causes a runtime error in `wsutil/inet_ipv6.h` when processed by TShark.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Wireshark/TShark 2.3.0 (v2.3.0rc0-3369-g2e2ba64b72)
No auth needed
Prerequisites: A vulnerable version of Wireshark/TShark · Ability to provide a malformed pcap file to the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (7)

Core 7
Core References
Issue Tracking, Third Party Advisory x_refsource_misc
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=1303
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/98805
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42123/
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1038612
Issue Tracking, Patch, Vendor Advisory x_refsource_misc
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=13675

Scores

CVSS v3 7.5
EPSS 0.1401
EPSS Percentile 96.1%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-20
Status published
Products (1)
wireshark/wireshark 2.2.0 - 2.2.6
Published Jun 02, 2017
Tracked Since Feb 18, 2026