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CVE-2017-9343

26
FAUCET Score

CVE-2017-9343 describes a NULL pointer dereference vulnerability in the MSNIP dissector of Wireshark versions 2.2.0 to 2.2.6 and 2.0.0 to 2.0.12, caused by improper validation of an IPv4 address. This high-severity flaw (CVSS 7.5) allows an unauthenticated attacker to cause a denial of service (A:H) with low attack complexity (AC:L) over the network (AV:N). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.0.0, <= 2.0.12CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*
>= 2.2.0, <= 2.2.6CPE matchmatch criteria
cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.14%
Probability of exploitation in next 30 days
EPSS Percentile
86.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0314 is in the 76th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (2)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: wireshark
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: wireshark

Vendor Advisories (1)

redhatCVE-2017-9343Moderate

wireshark: MSNIP dissector crash (wnpa-sec-2017-30)

Jun 1, 2017

References

bugs.chromium.org / p/oss-fuzz/issues/detail
Issue TrackingThird Party Advisory
bugs.wireshark.org / bugzilla/show_bug.cgi
Issue TrackingPatchVendor Advisory
code.wireshark.org / review/gitweb
wireshark.org / security/wnpa-sec-2017-30.html
Vendor Advisory
securityfocus.com / bid/98797
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038612
Third Party AdvisoryVDB Entry