HOMEVULNERABILITIESCVE-2019-18282
MEDIUM

CVE-2019-18282

CWE-330Published: January 16, 2020· Updated: Jun 17, 2026

5.3
CVSS v3.1

Official Description

The flow_dissector feature in the Linux kernel 4.3 through 5.x before 5.3.10 has a device tracking vulnerability, aka CID-55667441c84f. This occurs because the auto flowlabel of a UDP IPv6 packet relies on a 32-bit hashrnd value as a secret, and because jhash (instead of siphash) is used. The hashrnd value remains the same starting from boot time, and can be inferred by an attacker. This affects net/core/flow_dissector.c and related code.

NVD Source

Technical Analysis

CVE-2019-18282 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Affected Vendors & Products

Debian1 product(s)
debian linux
Linux1 product(s)
linux kernel
netapp17 product(s)
a700s firmwarea700s8300 firmware83008700 firmware8700a400 firmwarea400h610s firmwareh610sactive iq unified managercloud backup+5
Source: NVD CPE · 19 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2
PATCHhttps://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2
ADVISORYhttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20200204-0002/
ADVISORYhttps://www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2o
ADVISORYhttps://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/03/msg00001.html
ADVISORYhttps://security.netapp.com/advisory/ntap-20200204-0002/
ADVISORYhttps://www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2o

All References (10)

→
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10Mailing List · Vendor Advisory
→
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2Mailing List · Patch · Vendor Advisory
→
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20200204-0002/Third Party Advisory
→
https://www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2oThird Party Advisory
→
https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.3.10Mailing List · Vendor Advisory
→
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=55667441c84fa5e0911a0aac44fb059c15ba6da2Mailing List · Patch · Vendor Advisory
→
https://lists.debian.org/debian-lts-announce/2020/03/msg00001.htmlMailing List · Third Party Advisory
→
https://security.netapp.com/advisory/ntap-20200204-0002/Third Party Advisory
→
https://www.computer.org/csdl/proceedings-article/sp/2020/349700b594/1j2LgrHDR2oThird Party Advisory

Quick Facts

CVE IDCVE-2019-18282
CVSS Score5.3 / 10
SeverityMEDIUM
WeaknessCWE-330
CISA KEVNo
Affected3 vendor(s)
PublishedJan 16, 2020

Related CVEs (CWE-330)

CVE-2018-18531
9.8
CVE-2018-18375
9.8
CVE-2018-17888
9.8
CVE-2018-16239
9.8
CVE-2017-16924
9.8
CVE-2018-18602
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-18282 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWatch. CVE data is provided under the NVD usage policy.
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