What’s Vulnerable › Vulnerabilities

CVE-2018-16227

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-10-03 · updated 2026-06-17
• Weakness: CWE-125

Description

The IEEE 802.11 parser in tcpdump before 4.9.3 has a buffer over-read in print-802_11.c for the Mesh Flags subfield.

Affected products

• macOS: before 10.15.2 — fixed in 10.15.2
• Debian Linux: 8.0, 9.0, 10.0
• Fedoraproject Fedora: 29, 30, 31
• openSUSE Leap: 15.0, 15.1
• Red Hat Enterprise Linux: 7.0, 8.0
• The Tcpdump Group tcpdump: before 4.9.3 — fixed in 4.9.3

How to fix

Upgrade to a fixed version: macOS 10.15.2; The Tcpdump Group tcpdump 4.9.3. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00050.html
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00053.html
• http://seclists.org/fulldisclosure/2019/Dec/26
• https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES
• https://github.com/the-tcpdump-group/tcpdump/commit/4846b3c5d0a850e860baf4f07340495d29837d09
• https://lists.debian.org/debian-lts-announce/2019/10/msg00015.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62XY42U6HY3H2APR5EHNWCZ7SAQNMMJN/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNYXF3IY2X65IOD422SA6EQUULSGW7FN/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R2UDPOSGVJQIYC33SQBXMDXHH4QDSDMU/
• https://seclists.org/bugtraq/2019/Dec/23
• https://seclists.org/bugtraq/2019/Oct/28
• https://security.netapp.com/advisory/ntap-20200120-0001/

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