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TI-2018-10510 Aliases CVE-2018-14647GHSA-gvw2-fvqg-v8mm

Missing initialization of resource in Python

Priority MEDIUM 46CWE-335Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 33 fixed, 3 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

Python's elementtree C accelerator failed to initialise Expat's hash salt during initialization. This could make it easy to conduct denial of service attacks against Expat by constructing an XML document that would cause pathological hash collisions in Expat's internal data structures, consuming large amounts CPU and RAM. The vulnerability exists in Python versions 3.7.0, 3.6.0 through 3.6.6, 3.5.0 through 3.5.6, 3.4.0 through 3.4.9, 2.7.0 through 2.7.15.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.10911 95th percentileScored 2026-11-07
Fix Partial Red Hat: 6 advisoriesRed Hat: 33 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
The Python ProjectPython3.8, 3.7, 3.6, 3.5, 3.4, 2.7—No fix listedCNA
  • Python VendorThe Python Project Affected 3.8, 3.7, 3.6, 3.5, 3.4, 2.7 Fixed in — No fix listed CNA

CPE configurations NVD · 13

CPEVersionsRoleVendor
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*2.7.0 – 2.7.15; 3.4.0 – 3.4.9; 3.5.0 – 3.5.6; 3.6.0 – 3.6.6Vulnerablepython-pillow
cpe:2.3:a:python:python:3.7.0:*:*:*:*:*:*:*3.7.0Vulnerablepython-pillow
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*30VulnerableFedoraproject
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
  • cpe:2.3:a:python:python:*:*:*:*:*:*:*:* Versions 2.7.0 – 2.7.15; 3.4.0 – 3.4.9; 3.5.0 – 3.5.6; 3.6.0 – 3.6.6 Vulnerable ·python-pillow
  • cpe:2.3:a:python:python:3.7.0:*:*:*:*:*:*:* Versions 3.7.0 Vulnerable ·python-pillow
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* Versions 30 Vulnerable ·Fedoraproject
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
Show 3 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*7.0VulnerableRed Hat
  • cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat

Remediation

Red Hat 6 advisories

  • RHSA-2020:1462 Released 2020-04-14 · Red Hat rating Moderate
    python security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.6) python-2.7.5-83.el7_6, python-devel-2.7.5-83.el7_6, python-libs-2.7.5-83.el7_6
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6) python-debug-2.7.5-83.el7_6, python-test-2.7.5-83.el7_6, python-tools-2.7.5-83.el7_6 +1
    • Red Hat Enterprise Linux Server EUS (v. 7.6) python-2.7.5-83.el7_6, python-devel-2.7.5-83.el7_6, python-libs-2.7.5-83.el7_6 +1
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.6) python-debug-2.7.5-83.el7_6, python-test-2.7.5-83.el7_6, python-tools-2.7.5-83.el7_6 +1
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) python-2.7.5-83.el7_6, python-devel-2.7.5-83.el7_6, python-libs-2.7.5-83.el7_6
    • Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) python-debug-2.7.5-83.el7_6, python-test-2.7.5-83.el7_6, python-tools-2.7.5-83.el7_6 +1
  • RHSA-2020:1346 Released 2020-04-07 · Red Hat rating Moderate
    python security update
    • Red Hat Enterprise Linux Server AUS (v. 7.4) python-2.7.5-63.el7_4, python-devel-2.7.5-63.el7_4, python-libs-2.7.5-63.el7_4
    • Red Hat Enterprise Linux Server E4S (v. 7.4) python-2.7.5-63.el7_4, python-devel-2.7.5-63.el7_4, python-libs-2.7.5-63.el7_4
    • Red Hat Enterprise Linux Server Optional AUS (v. 7.4) python-debug-2.7.5-63.el7_4, python-test-2.7.5-63.el7_4, python-tools-2.7.5-63.el7_4 +1
    • Red Hat Enterprise Linux Server Optional E4S (v. 7.4) python-debug-2.7.5-63.el7_4, python-test-2.7.5-63.el7_4, python-tools-2.7.5-63.el7_4 +1
    • Red Hat Enterprise Linux Server Optional TUS (v. 7.4) python-debug-2.7.5-63.el7_4, python-test-2.7.5-63.el7_4, python-tools-2.7.5-63.el7_4 +1
    • Red Hat Enterprise Linux Server TUS (v. 7.4) python-2.7.5-63.el7_4, python-devel-2.7.5-63.el7_4, python-libs-2.7.5-63.el7_4
  • RHSA-2020:1268 Released 2020-04-01 · Red Hat rating Moderate
    python security update
    • Red Hat Enterprise Linux ComputeNode EUS (v. 7.5) python-2.7.5-74.el7_5, python-devel-2.7.5-74.el7_5, python-libs-2.7.5-74.el7_5
    • Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5) python-debug-2.7.5-74.el7_5, python-test-2.7.5-74.el7_5, python-tools-2.7.5-74.el7_5 +1
    • Red Hat Enterprise Linux Server EUS (v. 7.5) python-2.7.5-74.el7_5, python-devel-2.7.5-74.el7_5, python-libs-2.7.5-74.el7_5 +1
    • Red Hat Enterprise Linux Server Optional EUS (v. 7.5) python-debug-2.7.5-74.el7_5, python-test-2.7.5-74.el7_5, python-tools-2.7.5-74.el7_5 +1
Show 3 more Red Hat advisories
  • RHSA-2019:3725 Released 2019-11-06 · Red Hat rating Moderate
    rh-python36-python security, bug fix, and enhancement update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) rh-python36-python-3.6.9-2.el6, rh-python36-python-debug-3.6.9-2.el6, rh-python36-python-devel-3.6.9-2.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) rh-python36-python-3.6.9-2.el7, rh-python36-python-debug-3.6.9-2.el7, rh-python36-python-devel-3.6.9-2.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) rh-python36-python-3.6.9-2.el7, rh-python36-python-debug-3.6.9-2.el7, rh-python36-python-devel-3.6.9-2.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) rh-python36-python-3.6.9-2.el7, rh-python36-python-debug-3.6.9-2.el7, rh-python36-python-devel-3.6.9-2.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7) rh-python36-python-3.6.9-2.el7, rh-python36-python-debug-3.6.9-2.el7, rh-python36-python-devel-3.6.9-2.el7 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) rh-python36-python-3.6.9-2.el6, rh-python36-python-debug-3.6.9-2.el6, rh-python36-python-devel-3.6.9-2.el6 +4
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) rh-python36-python-3.6.9-2.el7, rh-python36-python-debug-3.6.9-2.el7, rh-python36-python-devel-3.6.9-2.el7 +4
  • RHSA-2019:2030 Released 2019-08-06 · Red Hat rating Moderate
    python security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) python-2.7.5-86.el7, python-libs-2.7.5-86.el7
    • Red Hat Enterprise Linux Client Optional (v. 7) python-debug-2.7.5-86.el7, python-devel-2.7.5-86.el7, python-test-2.7.5-86.el7 +2
    • Red Hat Enterprise Linux ComputeNode (v. 7) python-2.7.5-86.el7, python-devel-2.7.5-86.el7, python-libs-2.7.5-86.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) python-debug-2.7.5-86.el7, python-test-2.7.5-86.el7, python-tools-2.7.5-86.el7 +1
    • Red Hat Enterprise Linux Server (v. 7) python-2.7.5-86.el7, python-devel-2.7.5-86.el7, python-libs-2.7.5-86.el7 +1
    • Red Hat Enterprise Linux Server Optional (v. 7) python-debug-2.7.5-86.el7, python-test-2.7.5-86.el7, python-tools-2.7.5-86.el7 +1
    • Red Hat Enterprise Linux Workstation (v. 7) python-2.7.5-86.el7, python-devel-2.7.5-86.el7, python-libs-2.7.5-86.el7
    • Red Hat Enterprise Linux Workstation Optional (v. 7) python-debug-2.7.5-86.el7, python-test-2.7.5-86.el7, python-tools-2.7.5-86.el7 +1
  • RHSA-2019:1260 Released 2019-05-22 · Red Hat rating Important
    python27-python and python27-python-jinja2 security and bug fix update
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) python27-python-2.7.16-4.el6, python27-python-debug-2.7.16-4.el6, python27-python-devel-2.7.16-4.el6 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) python27-python-2.7.16-4.el7, python27-python-debug-2.7.16-4.el7, python27-python-devel-2.7.16-4.el7 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4) python27-python-2.7.16-4.el7, python27-python-debug-2.7.16-4.el7, python27-python-devel-2.7.16-4.el7 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5) python27-python-2.7.16-4.el7, python27-python-debug-2.7.16-4.el7, python27-python-devel-2.7.16-4.el7 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6) python27-python-2.7.16-4.el7, python27-python-debug-2.7.16-4.el7, python27-python-devel-2.7.16-4.el7 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) python27-python-2.7.16-4.el6, python27-python-debug-2.7.16-4.el6, python27-python-devel-2.7.16-4.el6 +5
    • Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) python27-python-2.7.16-4.el7, python27-python-debug-2.7.16-4.el7, python27-python-devel-2.7.16-4.el7 +5

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 Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Software CollectionsAffectedNo fix planned: Will not fix
Red Hat Ansible Tower 3.4 for RHEL 7 ServerFixed—
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2019:2030
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:2030
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2019:2030
Red Hat Enterprise Linux ComputeNode EUS (v. 7.5)Fixed RHSA-2020:1268
Red Hat Enterprise Linux ComputeNode EUS (v. 7.6)Fixed RHSA-2020:1462
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2019:2030
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.5)Fixed RHSA-2020:1268
Red Hat Enterprise Linux ComputeNode Optional EUS (v. 7.6)Fixed RHSA-2020:1462
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:2030
Red Hat Enterprise Linux Server AUS (v. 7.4)Fixed RHSA-2020:1346
Red Hat Enterprise Linux Server E4S (v. 7.4)Fixed RHSA-2020:1346
Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2020:1268
Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2020:1462
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:2030
Red Hat Enterprise Linux Server Optional AUS (v. 7.4)Fixed RHSA-2020:1346
Red Hat Enterprise Linux Server Optional E4S (v. 7.4)Fixed RHSA-2020:1346
Red Hat Enterprise Linux Server Optional EUS (v. 7.5)Fixed RHSA-2020:1268
Red Hat Enterprise Linux Server Optional EUS (v. 7.6)Fixed RHSA-2020:1462
Red Hat Enterprise Linux Server Optional TUS (v. 7.4)Fixed RHSA-2020:1346
Red Hat Enterprise Linux Server TUS (v. 7.4)Fixed RHSA-2020:1346
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:2030
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:2030
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7)Fixed RHSA-2020:1462
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7)Fixed RHSA-2020:1462
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2019:1260, RHSA-2019:3725
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:1260, RHSA-2019:3725
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.4)Fixed RHSA-2019:1260
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2019:1260, RHSA-2019:3725
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed RHSA-2019:1260, RHSA-2019:3725
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.7)Fixed RHSA-2019:3725
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2019:1260, RHSA-2019:3725
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:1260, RHSA-2019:3725
Not affected: 1 product
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-14647
  2. 2026-10-03 Alias added: GHSA-gvw2-fvqg-v8mm
  3. 2026-10-07 CISA SSVC decision points changed

References

Patch 1

Advisory 12

Other 1

Sources

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