CVE-2021-3516

Published on: 06/01/2021 12:00:00 AM UTC

Last Modified on: 03/01/2022 03:11:00 PM UTC

CVE-2021-3516

Source: Mitre Source: NIST CVE.ORG Print: PDF PDF
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Certain versions of Debian Linux from Debian contain the following vulnerability:

There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a crafted file to be processed by xmllint could trigger a use-after-free. The greatest impact of this flaw is to confidentiality, integrity, and availability.

  • CVE-2021-3516 has been assigned by URL Logo seca[email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 7.8 - HIGH

Attack
Vector ⓘ		 Attack
Complexity		 Privileges
Required		 User
Interaction
LOCAL LOW NONE REQUIRED
Scope Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 6.8 - MEDIUM

Access
Vector ⓘ		 Access
Complexity		 Authentication
NETWORK MEDIUM NONE
Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
PARTIAL PARTIAL PARTIAL

CVE References

Description Tags ⓘ Link
1954225 – (CVE-2021-3516) CVE-2021-3516 libxml2: use-after-free in xmlEncodeEntitiesInternal() in entities.c bugzilla.redhat.com
text/html
 URL Logo MISC bugzilla.redhat.com/show_bug.cgi?id=1954225
Fix use-after-free with `xmllint --html --push` (1358d157) · Commits · GNOME / libxml2 · GitLab gitlab.gnome.org
text/html
 URL Logo MISC gitlab.gnome.org/GNOME/libxml2/-/commit/1358d157d0bd83be1dfe356a69213df9fac0b539
[SECURITY] Fedora 34 Update: libxml2-2.9.10-12.fc34 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
 URL Logo FEDORA FEDORA-2021-e3ed1ba38b
Oracle Critical Patch Update Advisory - January 2022 www.oracle.com
text/html
 URL Logo MISC www.oracle.com/security-alerts/cpujan2022.html
libxml2: Multiple vulnerabilities (GLSA 202107-05) — Gentoo security security.gentoo.org
text/html
 URL Logo GENTOO GLSA-202107-05
[SECURITY] [DLA 2653-1] libxml2 security update lists.debian.org
text/html
 URL Logo MLIST [debian-lts-announce] 20210510 [SECURITY] [DLA 2653-1] libxml2 security update
[SECURITY] Fedora 33 Update: libxml2-2.9.12-4.fc33 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
text/html
 URL Logo FEDORA FEDORA-2021-b950000d2b
CVE-2021-3516 Libxml2 Vulnerability in NetApp Products | NetApp Product Security security.netapp.com
text/html
 URL Logo CONFIRM security.netapp.com/advisory/ntap-20210716-0005/
heap-use-after-free in entities.c:621 (#230) · Issues · GNOME / libxml2 · GitLab gitlab.gnome.org
text/html
 URL Logo MISC gitlab.gnome.org/GNOME/libxml2/-/issues/230
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Related QID Numbers

  • 159285 Oracle Enterprise Linux Security Update for libxml2 (ELSA-2021-2569)
  • 174990 SUSE Enterprise Linux Security Update for libxml2 (SUSE-SU-2021:1523-1)
  • 174991 SUSE Enterprise Linux Security Update for libxml2 (SUSE-SU-2021:1524-1)
  • 178586 Debian Security Update for libxml2 (DLA 2653-1)
  • 180347 Debian Security Update for libxml2 (CVE-2021-3516)
  • 198409 Ubuntu Security Notification for libxml2 vulnerabilities (USN-4991-1)
  • 239468 Red Hat Update for libxml2 (RHSA-2021:2569)
  • 240235 Red Hat Update for JBoss Core Services (RHSA-2022:1389)
  • 281180 Fedora Security Update for libxml2 (FEDORA-2021-e3ed1ba38b)
  • 281707 Fedora Security Update for libxml2 (FEDORA-2021-b950000d2b)
  • 296065 Oracle Solaris 11.4 Support Repository Update (SRU) 39.107.1 Missing (CPUOCT2021)
  • 352459 Amazon Linux Security Advisory for libxml2: ALAS2-2021-1677
  • 354638 Amazon Linux Security Advisory for libxml2 : AL2012-2022-370
  • 354929 Amazon Linux Security Advisory for libxml2 : ALAS-2023-1743
  • 376952 NetApp Clustered Data Open Network Technology for Appliance Products (ONTAP) Disclosure of Sensitive Information Vulnerability (NTAP-20210625-0002,NTAP-20210716-0005)
  • 377408 Alibaba Cloud Linux Security Update for libxml2 (ALINUX3-SA-2021:0047)
  • 591406 Siemens SIMATIC S7-1500 CPU GNU/Linux subsystem Multiple Vulnerabilities (SSB-439005, ICSA-22-104-13)
  • 670491 EulerOS Security Update for libxml2 (EulerOS-SA-2021-2249)
  • 670517 EulerOS Security Update for libxml2 (EulerOS-SA-2021-2275)
  • 670548 EulerOS Security Update for libxml2 (EulerOS-SA-2021-2306)
  • 670648 EulerOS Security Update for libxml2 (EulerOS-SA-2021-2406)
  • 670750 EulerOS Security Update for libxml2 (EulerOS-SA-2021-2508)
  • 670851 EulerOS Security Update for libxml2 (EulerOS-SA-2021-2406)
  • 670996 EulerOS Security Update for libxml2 (EulerOS-SA-2021-2595)
  • 710071 Gentoo Linux libxml2 Multiple vulnerabilities (GLSA 202107-05)
  • 750025 SUSE Enterprise Linux Security Update for libxml2 (SUSE-SU-2021:1654-1)
  • 750027 SUSE Enterprise Linux Security Update for libxml2 (SUSE-SU-2021:1658-1)
  • 750201 OpenSUSE Security Update for libxml2 (openSUSE-SU-2021:0764-1)
  • 750222 OpenSUSE Security Update for libxml2 (openSUSE-SU-2021:0692-1)
  • 940375 AlmaLinux Security Update for libxml2 (ALSA-2021:2569)
  • 960016 Rocky Linux Security Update for libxml2 (RLSA-2021:2569)

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
Operating
System		DebianDebian Linux9.0AllAllAll
Operating
System		FedoraprojectFedora33AllAllAll
Operating
System		FedoraprojectFedora34AllAllAll
ApplicationNetappClustered Data Ontap-AllAllAll
ApplicationNetappClustered Data Ontap Antivirus Connector-AllAllAll
ApplicationNetappOntap Select Deploy Administration Utility-AllAllAll
ApplicationOracleZfs Storage Appliance Kit8.8AllAllAll
Operating
System		RedhatEnterprise Linux6.0AllAllAll
Operating
System		RedhatEnterprise Linux7.0AllAllAll
Operating
System		RedhatEnterprise Linux8.0AllAllAll
ApplicationRedhatJboss Core Services-AllAllAll
ApplicationXmlsoftXmllintAllAllAllAll
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*:
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*:
  • cpe:2.3:a:netapp:clustered_data_ontap:-:*:*:*:*:*:*:*:
  • cpe:2.3:a:netapp:clustered_data_ontap_antivirus_connector:-:*:*:*:*:*:*:*:
  • cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*:
  • cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*:
  • cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*:
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*:
  • cpe:2.3:a:redhat:jboss_core_services:-:*:*:*:*:*:*:*:
  • cpe:2.3:a:xmlsoft:xmllint:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-3516 : There's a flaw in libxml2's xmllint in versions before 2.9.11. An attacker who is able to submit a… twitter.com/i/web/status/1… 2021-06-01 14:07:14
Reddit Logo Icon /r/netcve CVE-2021-3516 2021-06-01 14:41:16
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