CVE-2021-3520

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Summary

CVECVE-2021-3520
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-06-02 13:15:13 UTC
Updated2026-10-14 10:17:44 UTC
DescriptionThere's a flaw in lz4. An attacker who submits a crafted file to an application linked with lz4 may be able to trigger an integer overflow, leading to calling of memmove() on a negative size argument, causing an out-of-bounds write and/or a crash. The greatest impact of this flaw is to availability, with some potential impact to confidentiality and integrity as well.

Risk And Classification

Primary CVSS: v3.1 9.8 CRITICAL from [email protected]

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

Problem Types: CWE-190 | CWE-787 | CWE-190 CWE-190->CWE-787

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary9.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3.1 Breakdown

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

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

CVSS v2.0 Breakdown

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

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Lz4 Project Lz4 All All All All
Application Netapp Active Iq Unified Manager - All All All
Application Netapp Cloud Backup - All All All
Application Netapp Ontap Select Deploy Administration Utility - All All All
Application Oracle Communications Cloud Native Core Policy 1.14.0 All All All
Application Oracle Zfs Storage Appliance Kit 8.8 All All All
Application Splunk Universal Forwarder All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Lz4 affected lz4-1.8.3 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
Oracle Critical Patch Update Advisory - April 2022 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
1954559 – (CVE-2021-3520) CVE-2021-3520 lz4: memory corruption due to an integer overflow bug caused by memmove argument af854a3a-2127-422b-91ae-364da2661108 bugzilla.redhat.com Issue Tracking, Patch, Third Party Advisory
Oracle Critical Patch Update Advisory - October 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
Oracle Critical Patch Update Advisory - July 2021 af854a3a-2127-422b-91ae-364da2661108 www.oracle.com Patch, Third Party Advisory
CVE-2021-3520 lz4 Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
Red Hat Customer Portal - Access to 24x7 support and knowledge MITRE access.redhat.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MITRE access.redhat.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MITRE access.redhat.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MITRE access.redhat.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MITRE access.redhat.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MITRE access.redhat.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159288 Oracle Enterprise Linux Security Update for lz4 (ELSA-2021-2575)
  • 178590 Debian Security Update for lz4 (DLA 2657-1)
  • 178618 Debian Security Update for lz4 (DSA 4919-1)
  • 178632 Debian Security Update for lz4 (DSA 4919-1)
  • 179635 Debian Security Update for lz4 (CVE-2021-3520)
  • 198387 Ubuntu Security Notification for LZ4 vulnerability (USN-4968-1)
  • 20354 Oracle Database 19c Critical Patch Update - July 2023
  • 20355 Oracle Database 21c Critical Patch Update - July 2023
  • 20356 Oracle Database 19c Critical OJVM Patch Update - July 2023
  • 239465 Red Hat Update for lz4 (RHSA-2021:2575)
  • 296053 Oracle Solaris 11.4 Support Repository Update (SRU) 35.94.4 Missing (CPUJUL2021)
  • 354329 Amazon Linux Security Advisory for lz4 : ALAS2022-2022-169
  • 354372 Amazon Linux Security Advisory for lz4 : ALAS2022-2022-137
  • 355122 Amazon Linux Security Advisory for lz4 : ALAS2023-2023-015
  • 377421 Alibaba Cloud Linux Security Update for lz4 (ALINUX3-SA-2021:0049)
  • 378599 Splunk Enterprise Third Party Package Updates for June (SVD-2023-0613)
  • 378883 Splunk Enterprise August Third Party Package Updates (SVD-2023-0808)
  • 500373 Alpine Linux Security Update for lz4
  • 501753 Alpine Linux Security Update for lz4
  • 504131 Alpine Linux Security Update for lz4
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 670649 EulerOS Security Update for lz4 (EulerOS-SA-2021-2407)
  • 670716 EulerOS Security Update for lz4 (EulerOS-SA-2021-2474)
  • 670752 EulerOS Security Update for lz4 (EulerOS-SA-2021-2510)
  • 670777 EulerOS Security Update for lz4 (EulerOS-SA-2021-2535)
  • 670801 EulerOS Security Update for lz4 (EulerOS-SA-2021-2559)
  • 730206 McAfee Web Gateway Multiple Vulnerabilities (WP-3792, WP-4003, WP-4021, WP-4058, WP-4067)
  • 750011 SUSE Enterprise Linux Security Update for lz4 (SUSE-SU-2021:1613-1)
  • 750021 SUSE Enterprise Linux Security Update for lz4 (SUSE-SU-2021:1647-1)
  • 750092 SUSE Enterprise Linux Security Update for lz4 (SUSE-SU-2021:1825-1)
  • 750198 OpenSUSE Security Update for lz4 (openSUSE-SU-2021:0760-1)
  • 750794 OpenSUSE Security Update for lz4 (openSUSE-SU-2021:1825-1)
  • 904839 Common Base Linux Mariner (CBL-Mariner) Security Update for fluent-bit (12326)
  • 904851 Common Base Linux Mariner (CBL-Mariner) Security Update for librdkafka (12357)
  • 904898 Common Base Linux Mariner (CBL-Mariner) Security Update for lz4 (12361)
  • 904992 Common Base Linux Mariner (CBL-Mariner) Security Update for lz4 (12561)
  • 940325 AlmaLinux Security Update for lz4 (ALSA-2021:2575)
  • 960088 Rocky Linux Security Update for lz4 (RLSA-2021:2575)

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