CVE-2019-17543

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Summary

CVECVE-2019-17543
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-10-14 02:15:10 UTC
Updated2026-10-14 07:16:49 UTC
DescriptionLZ4 before 1.9.2 has a heap-based buffer overflow in LZ4_write32 (related to LZ4_compress_destSize), affecting applications that call LZ4_compress_fast with a large input. (This issue can also lead to data corruption.) NOTE: the vendor states "only a few specific / uncommon usages of the API are at risk."

Risk And Classification

Primary CVSS: v3.1 8.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.091160000 probability, percentile 0.952050000 (date 2026-10-11)

Problem Types: CWE-787 | n/a

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary8.1HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary6.8AV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

AV:N/AC:M/Au:N/C:P/I:P/A:P

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Lz4 Project Lz4 All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Comparing v1.9.1...v1.9.2 · lz4/lz4 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Third Party Advisory
Oracle Critical Patch Update Advisory - July 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Question concerning CVE-2019-17543 · Issue #801 · lz4/lz4 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Third Party Advisory
[security-announce] openSUSE-SU-2019:2398-1: moderate: Security update f af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
Oracle Critical Patch Update Advisory - October 2020 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com
[LZ4_compress_destSize] Fix off-by-one error in fix by terrelln · Pull Request #760 · lz4/lz4 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
July 2021 MySQL Vulnerabilities in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
[LZ4_compress_destSize] Fix rare data corruption bug by terrelln · Pull Request #756 · lz4/lz4 · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Patch, Third Party Advisory
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
Pony Mail! af854a3a-2127-422b-91ae-364da2661108 lists.apache.org
15941 - oss-fuzz - OSS-Fuzz: Fuzzing the planet - Monorail af854a3a-2127-422b-91ae-364da2661108 bugs.chromium.org Third Party Advisory
[security-announce] openSUSE-SU-2019:2399-1: moderate: Security update f af854a3a-2127-422b-91ae-364da2661108 lists.opensuse.org
Pony Mail! MITRE lists.apache.org
Pony Mail! MITRE lists.apache.org
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CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 20225 Oracle MySQL July 2021 Critical Patch Update (CPU July 2021)
  • 20288 Oracle Database 19c Critical OJVM Patch Update - October 2020
  • 500372 Alpine Linux Security Update for lz4
  • 504130 Alpine Linux Security Update for lz4
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 671056 EulerOS Security Update for lz4 (EulerOS-SA-2019-2291)
  • 690068 Free Berkeley Software Distribution (FreeBSD) Security Update for mysql (38a4a043-e937-11eb-9b84-d4c9ef517024)
  • 750011 SUSE Enterprise Linux Security Update for lz4 (SUSE-SU-2021:1613-1)

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