CRITICAL
tcpdump: Buffer over-read in print_trans() function in print-smb.c
Published Oct 3, 2019
9.8
CRITICALCVSS 3.1
EPSS 4.13%
Description
The SMB parser in tcpdump before 4.9.3 has buffer over-reads in print-smb.c:print_trans() for \MAILSLOT\BROWSE and \PIPE\LANMAN.
Affected products
No data.
Configuration 2
OR
- < 10.15.2
- 8.0
- 9.0
- 10.0
- 29
- 30
- 31
- 15.0
- 15.1
- 7.0
- 8.0
No data.
Red Hat Enterprise Linux 8
tcpdump-14:4.9.3-1.el8
Fixed · RHSA-2020:4760
Red Hat Enterprise Linux 5
tcpdump
Out of support scope
Red Hat Enterprise Linux 6
tcpdump
Out of support scope
Red Hat Enterprise Linux 7
tcpdump
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 8 | tcpdump-14:4.9.3-1.el8 | Fixed | RHSA-2020:4760 |
| Red Hat Enterprise Linux 5 | tcpdump | Out of support scope | n/a |
| Red Hat Enterprise Linux 6 | tcpdump | Out of support scope | n/a |
| Red Hat Enterprise Linux 7 | tcpdump | Fix deferred | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/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
1 other source (CISA ADP) ▾
9.8 CRITICAL CISA ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Dec 3, 2025 · SSVC 2.0.3
4.13% 0.04134
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.04134
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.13% (0.04134) | 90.51th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.13% (0.04134) | 89.49th | v5 (v2026.06.15) |
| May 26, 2026 | 1.61% (0.01608) | 81.98th | v4 (v2025.03.14) |
| Nov 21, 2025 | 0.34% (0.00335) | 55.77th | v4 (v2025.03.14) |
| Nov 18, 2025 | 2.62% (0.02618) | 84.35th | v4 (v2025.03.14) |
| Mar 30, 2025 | 1.22% (0.01218) | 77.19th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.84% (0.02840) | 77.00th | v4 (v2025.03.14) |
| Mar 28, 2025 | 1.22% (0.01218) | 77.20th | v4 (v2025.03.14) |
| Mar 27, 2025 | 2.84% (0.02840) | 84.49th | v4 (v2025.03.14) |
| Mar 20, 2025 | 1.22% (0.01218) | 77.28th | v4 (v2025.03.14) |
| Mar 19, 2025 | 2.84% (0.02840) | 84.65th | v4 (v2025.03.14) |
| Jul 20, 2024 | 0.33% (0.00329) | 71.28th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.33% (0.00329) | 70.18th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.33% (0.00327) | 66.18th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.52% (0.00524) | 12.57th | v1 |
| Jan 6, 2022 | 0.52% (0.00524) | 12.12th | v1 |
| Sep 1, 2021 | 0.52% (0.00524) | 32.30th | v1 |
| Apr 14, 2021 | 0.52% (0.00524) | 0.00th | v1 |
Weaknesses (1)
References (20)
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00050.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00053.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://seclists.org/fulldisclosure/2019/Dec/26 mailing-listx_refsource_FULLDISCMailing ListThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-16451 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1760517 Issue Tracking
- https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGES x_refsource_MISCRelease NotesThird Party Advisory
- https://github.com/the-tcpdump-group/tcpdump/commit/96480ab95308cd9234b4f09b175ebf60e17792c6 x_refsource_CONFIRMPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2019/10/msg00015.html mailing-listx_refsource_MLISTThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62XY42U6HY3H2APR5EHNWCZ7SAQNMMJN/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNYXF3IY2X65IOD422SA6EQUULSGW7FN/ vendor-advisoryx_refsource_FEDORA
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R2UDPOSGVJQIYC33SQBXMDXHH4QDSDMU/ vendor-advisoryx_refsource_FEDORA
- https://nvd.nist.gov/vuln/detail/CVE-2018-16451
- https://seclists.org/bugtraq/2019/Dec/23 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://seclists.org/bugtraq/2019/Oct/28 mailing-listx_refsource_BUGTRAQMailing ListThird Party Advisory
- https://security.netapp.com/advisory/ntap-20200120-0001/ x_refsource_CONFIRM
- https://support.apple.com/kb/HT210788 x_refsource_CONFIRMThird Party Advisory
- https://usn.ubuntu.com/4252-1/ vendor-advisoryx_refsource_UBUNTU
- https://usn.ubuntu.com/4252-2/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2018-16451
- https://www.debian.org/security/2019/dsa-4547 vendor-advisoryx_refsource_DEBIANThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 3, 2019
Updated Dec 3, 2025
Reserved Sep 3, 2018
Link CVE-2018-16451
CISA Vulnrichment
Updated Dec 3, 2025