Security readout for executives and security teams
CVE-2018-16451 is a tcpdump SMB parsing flaw fixed before tcpdump 4.9.3. A malicious SMB packet or capture could make a vulnerable tcpdump read beyond expected memory while decoding specific MAILSLOT or PIPE transactions. This affects packet inspection tooling, not SMB services themselves. Exposure is likely where tcpdump before 4.9.3, or vendor packages based on it, parse untrusted SMB traffic or packet captures. Linux distributions and vendors issued updates. Inventory should focus on servers, appliances, analyst workstations, and monitoring systems that run tcpdump. Treat as high priority for security operations and network monitoring assets. The business risk is disruption or possible exposure when trusted analysis tools inspect hostile traffic. Patch broadly, but prioritize systems that actively capture traffic or process external packet files. Mitigation focus: Upgrade tcpdump to 4.9.3 or a vendor-fixed package.; Apply Debian, Fedora, openSUSE, Ubuntu, Apple, or appliance vendor updates where applicable.; Avoid parsing untrusted SMB packet captures with vulnerable tcpdump..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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Open ATT&CK lookupCVE-2018-16451 mapping review
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Open ATT&CK lookup- Severity
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H3.95.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGESCVE reference · x_refsource_MISC
- https://github.com/the-tcpdump-group/tcpdump/commit/96480ab95308cd9234b4f09b175ebf60e17792c6CVE reference · x_refsource_CONFIRM
- [debian-lts-announce] 20191011 [SECURITY] [DLA 1955-1] tcpdump security updateCVE reference · mailing-list, x_refsource_MLIST
- 20191021 [SECURITY] [DSA 4547-1] tcpdump security updateCVE reference · mailing-list, x_refsource_BUGTRAQ
- DSA-4547CVE reference · vendor-advisory, x_refsource_DEBIAN
- FEDORA-2019-85d92df70fCVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2019-d06bc63433CVE reference · vendor-advisory, x_refsource_FEDORA
- FEDORA-2019-6db0d5b9d9CVE reference · vendor-advisory, x_refsource_FEDORA
- https://support.apple.com/kb/HT210788CVE reference · x_refsource_CONFIRM
- 20191211 APPLE-SA-2019-12-10-3 macOS Catalina 10.15.2, Security Update 2019-002 Mojave, Security Update 2019-007 High SierraCVE reference · mailing-list, x_refsource_BUGTRAQ
- https://security.netapp.com/advisory/ntap-20200120-0001/CVE reference · x_refsource_CONFIRM
- USN-4252-2CVE reference · vendor-advisory, x_refsource_UBUNTU
- USN-4252-1CVE reference · vendor-advisory, x_refsource_UBUNTU
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Out-of-bounds Read
Out-of-bounds Read represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.