HOMEVULNERABILITIESCVE-2019-20423
HIGH

CVE-2019-20423

CWE-120Published: January 27, 2020· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

In the Lustre file system before 2.12.3, the ptlrpc module has a buffer overflow and panic due to the lack of validation for specific fields of packets sent by a client. The function target_handle_connect() mishandles a certain size value when a client connects to a server, because of an integer signedness error.

NVD Source

Technical Analysis

CVE-2019-20423 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.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

lustre1 product(s)
lustre
Source: NVD CPE · 1 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

ADVISORYhttp://lustre.org/
ADVISORYhttp://wiki.lustre.org/Lustre_2.12.3_Changelog
ADVISORYhttps://jira.whamcloud.com/browse/LU-12605
ADVISORYhttps://review.whamcloud.com/#/c/35935/
ADVISORYhttp://lustre.org/
ADVISORYhttp://wiki.lustre.org/Lustre_2.12.3_Changelog
ADVISORYhttps://jira.whamcloud.com/browse/LU-12605
ADVISORYhttps://review.whamcloud.com/#/c/35935/

All References (8)

→
http://lustre.org/Product · Vendor Advisory
→
http://wiki.lustre.org/Lustre_2.12.3_ChangelogRelease Notes · Vendor Advisory
→
https://jira.whamcloud.com/browse/LU-12605Exploit · Third Party Advisory
→
https://review.whamcloud.com/#/c/35935/Third Party Advisory
→
http://lustre.org/Product · Vendor Advisory
→
http://wiki.lustre.org/Lustre_2.12.3_ChangelogRelease Notes · Vendor Advisory
→
https://jira.whamcloud.com/browse/LU-12605Exploit · Third Party Advisory
→
https://review.whamcloud.com/#/c/35935/Third Party Advisory

Quick Facts

CVE IDCVE-2019-20423
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-120
CISA KEVNo
Affected1 vendor(s)
PublishedJan 27, 2020

Related CVEs (CWE-120)

CVE-2007-1770
10.0
CVE-2002-1337
10.0
CVE-2010-10016
10.0
CVE-2026-24810
10.0
CVE-2012-10035
10.0
CVE-1999-1237
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-20423 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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