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wnpa-sec-2025-03 · SSH dissector crash

Summary

Name: SSH dissector crash

Docid: wnpa-sec-2025-03

Date: Agust 27, 2025

Affected versions: 4.4.0 to 4.4.8

Fixed versions: 4.4.9

References:

Wireshark issue 20642.
CVE-2025-9817.

Details

Description

The SSH dissector could crash.

Impact

Discovered in our internal testing environment. We are unaware of any exploits for this issue. It may be possible to make Wireshark crash by injecting a malformed packet onto the wire or by convincing someone to read a malformed packet trace file.

Resolution

Upgrade to Wireshark 4.4.9 or later.