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TI-2016-03823 Aliases CVE-2016-4447GHSA-qf4r-q9wc-m8w7

The xmlParseElementDecl function in parser.c in libxml2 before 2.9.4 allows…

Priority MEDIUM 48CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 17 fixed, 2 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

The xmlParseElementDecl function in parser.c in libxml2 before 2.9.4 allows context-dependent attackers to cause a denial of service (heap-based buffer underread and application crash) via a crafted file, involving xmlParseName.

Why it matters now

EPSS 0.1398 96th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 2 advisoriesRed Hat: 17 fixed, 2 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 17

CPEVersionsRoleVendor
cpe:2.3:a:hp:icewall_federation_agent:3.0:*:*:*:*:*:*:*3.0VulnerableHewlett Packard Enterprise
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*15.10VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*7.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:*3.3VulnerableOracle
cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:*3.4VulnerableOracle
cpe:2.3:a:apple:itunes:12.4.1:*:*:*:*:*:*:*12.4.1VulnerableApple
  • cpe:2.3:a:hp:icewall_federation_agent:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Hewlett Packard Enterprise
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Versions 15.10 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:oracle:vm_server:3.3:*:*:*:*:*:*:* Versions 3.3 Vulnerable ·Oracle
  • cpe:2.3:o:oracle:vm_server:3.4:*:*:*:*:*:*:* Versions 3.4 Vulnerable ·Oracle
  • cpe:2.3:a:apple:itunes:12.4.1:*:*:*:*:*:*:* Versions 12.4.1 Vulnerable ·Apple
Show 7 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:*all versionsRunning onMicrosoft
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*up to 9.3.2VulnerableApple
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*up to 10.11.5VulnerableApple
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*up to 9.2.1VulnerableApple
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*up to 2.2.1VulnerableApple
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*up to 2.9.3Vulnerablexmlsoft
cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:*7.5.0.0 – 7.5.2.10; 7.6.0.0 – 7.6.2.3VulnerableMcAfee
  • cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft
  • cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* Versions up to 9.3.2 Vulnerable ·Apple
  • cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* Versions up to 10.11.5 Vulnerable ·Apple
  • cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* Versions up to 9.2.1 Vulnerable ·Apple
  • cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* Versions up to 2.2.1 Vulnerable ·Apple
  • cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* Versions up to 2.9.3 Vulnerable ·xmlsoft
  • cpe:2.3:a:mcafee:web_gateway:*:*:*:*:*:*:*:* Versions 7.5.0.0 – 7.5.2.10; 7.6.0.0 – 7.6.2.3 Vulnerable ·McAfee

Remediation

Red Hat 2 advisories

  • RHSA-2016:2957 Released 2016-12-15 · Red Hat rating Important
    Red Hat JBoss Core Services Apache HTTP 2.4.23 Release
    • Red Hat JBoss Core Services
  • RHSA-2016:1292 Released 2016-06-23 · Red Hat rating Important
    libxml2 security update
    • Red Hat Enterprise Linux Client (v. 7) libxml2-2.9.1-6.el7_2.3, libxml2-python-2.9.1-6.el7_2.3
    • Red Hat Enterprise Linux Client Optional (v. 7) libxml2-devel-2.9.1-6.el7_2.3, libxml2-static-2.9.1-6.el7_2.3
    • Red Hat Enterprise Linux ComputeNode (v. 7) libxml2-2.9.1-6.el7_2.3, libxml2-python-2.9.1-6.el7_2.3
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) libxml2-devel-2.9.1-6.el7_2.3, libxml2-static-2.9.1-6.el7_2.3
    • Red Hat Enterprise Linux Desktop (v. 6) libxml2-2.7.6-21.el6_8.1, libxml2-python-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux Desktop Optional (v. 6) libxml2-devel-2.7.6-21.el6_8.1, libxml2-static-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux HPC Node (v. 6) libxml2-2.7.6-21.el6_8.1, libxml2-python-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) libxml2-devel-2.7.6-21.el6_8.1, libxml2-static-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux Server (v. 6) libxml2-2.7.6-21.el6_8.1, libxml2-2.7.6-21.el6_8.1.ppc, libxml2-devel-2.7.6-21.el6_8.1 +2
    • Red Hat Enterprise Linux Server (v. 7) libxml2-2.9.1-6.el7_2.3, libxml2-2.9.1-6.el7_2.3.ppc, libxml2-devel-2.9.1-6.el7_2.3 +2
    • Red Hat Enterprise Linux Server Optional (v. 6) libxml2-static-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux Server Optional (v. 7) libxml2-static-2.9.1-6.el7_2.3, libxml2-static-2.9.1-6.el7_2.3.ppc
    • Red Hat Enterprise Linux Workstation (v. 6) libxml2-2.7.6-21.el6_8.1, libxml2-devel-2.7.6-21.el6_8.1, libxml2-python-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux Workstation (v. 7) libxml2-2.9.1-6.el7_2.3, libxml2-devel-2.9.1-6.el7_2.3, libxml2-python-2.9.1-6.el7_2.3
    • Red Hat Enterprise Linux Workstation Optional (v. 6) libxml2-static-2.7.6-21.el6_8.1
    • Red Hat Enterprise Linux Workstation Optional (v. 7) libxml2-static-2.9.1-6.el7_2.3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 5AffectedNo fix planned: Will not fix
Red Hat JBoss Enterprise Web Server 3AffectedNo fix yet
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux HPC Node (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2016:1292
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2016:1292
Red Hat JBoss Core ServicesFixed RHSA-2016:2957

Timeline

  1. 2026-10-02 Threatist record created from CVE-2016-4447
  2. 2026-10-03 Alias added: GHSA-qf4r-q9wc-m8w7

References

Exploit 1

Patch 2

Advisory 22

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences