Is CVE-2018-7323 being actively exploited?

It is not currently in CISA's KEV catalog. Its EPSS exploitation probability is 3%.

What products does CVE-2018-7323 affect?

Tracked products affected include Wireshark. Check the version you run to see whether it is affected.

How do I fix CVE-2018-7323?

Apply the vendor fix promptly. Upgrade affected products to a fixed version.

CVE-2018-7323

Q: What is CVE-2018-7323?

CVE-2018-7323 is a high-severity software vulnerability (CWE-834) with a CVSS score of 7.5. In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

HIGH severity · CVSS 7.5 · CWE-834

7.5CVSS HIGH

Summary

In Wireshark 2.4.0 to 2.4.4 and 2.2.0 to 2.2.12, epan/dissectors/packet-wccp.c had a large loop that was addressed by ensuring that a calculated length was monotonically increasing.

Impact & exploitability

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

Confidentiality impactNone

Integrity impactNone

Availability impactHigh

Exploit probability (EPSS)3%

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

Affected products we track (1)

Wireshark

Recommendation

Apply the vendor fix promptly. Open any affected product above for its exact safe version.

Additional information

NVD record
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14412Advisory
https://www.wireshark.org/security/wnpa-sec-2018-06.htmlAdvisory
http://www.securityfocus.com/bid/103158Advisory
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=4f9199ea8cff56c6704e9828c3d80360b27c4565
https://code.wireshark.org/review/gitweb?p=wireshark.git%3Ba=commit%3Bh=5d45b69b590cabc5127282d1ade3bca1598e5f5c
https://lists.debian.org/debian-lts-announce/2018/04/msg00018.htmlAdvisory
https://lists.debian.org/debian-lts-announce/2019/01/msg00010.htmlAdvisory