Home/CVE/The HNCP parser in tcpdump before 4.9.3 has a buffer over-read in print-hncp.c:print_prefix().
CVE

CVE-2018-16228

The HNCP parser in tcpdump before 4.9.3 has a buffer over-read in print-hncp.c:print_prefix().

The HNCP parser in tcpdump before 4.9.3 has a buffer over-read in print-hncp.c:print_prefix().

HIGH · CVSS 7.5 EPSS 0.03123
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-125Out-of-bounds Read
CWE-125Out-of-bounds Read
▤

Affected Products & Versions

6
tcpdump< 4.9.3
apple mac os x< 10.15.2
debian linuxall versions
fedoraproject fedoraall versions
opensuse leapall versions
redhat enterprise linuxall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD03 Oct 2019 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

8
suse-csafopenSUSE-SU-2024:11425-1
suse-csafSUSE-SU-2020:3360-1
usnUSN-4252-2
usnUSN-4252-1
suse-csafopenSUSE-SU-2019:2344-1
🔗

References & Sources

16
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00050.htmlThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00053.htmlThird Party Advisory
http://seclists.org/fulldisclosure/2019/Dec/26Mailing ListThird Party Advisory
https://github.com/the-tcpdump-group/tcpdump/blob/tcpdump-4.9/CHANGESRelease NotesThird Party Advisory
https://github.com/the-tcpdump-group/tcpdump/commit/83a412a5275cac973c5841eca3511c766bed778dPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00015.htmlThird Party Advisory
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