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TI-2019-03478 Aliases CVE-2019-5010GHSA-jj99-2g8j-7j25

NULL pointer dereference in Python

Priority MEDIUM 52CWE-476Published · 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: 18 fixed, 1 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-476.

Summary

An exploitable denial-of-service vulnerability exists in the X509 certificate parser of Python.org Python 2.7.11 / 3.6.6. A specially crafted X509 certificate can cause a NULL pointer dereference, resulting in a denial of service. An attacker can initiate or accept TLS connections using crafted certificates to trigger this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.20743 97th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial Red Hat: 3 advisoriesRed Hat: 18 fixed, 1 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
—PythonPython.org CPython 2.7.11 Python.org CPython 3.6.6 Python.org CPython 3.5.2 Python.org CPython 3 master at 480833808e918a1dcebbbcfd07d5a8de3c5c2a66—No fix listedCNA
  • Python Vendor— Affected Python.org CPython 2.7.11 Python.org CPython 3.6.6 Python.org CPython 3.5.2 Python.org CPython 3 master at 480833808e918a1dcebbbcfd07d5a8de3c5c2a66 Fixed in — No fix listed CNA

CPE configurations NVD · 14

CPEVersionsRoleVendor
cpe:2.3:a:python:python:*:*:*:*:*:*:*:*2.7.0 to before 2.7.16; 3.4.0 to before 3.4.10; 3.5.0 to before 3.5.7; 3.6.0 to before 3.6.9; 3.7.0 to before 3.7.3Vulnerablepython-pillow
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*15.1VulnerableopenSUSE
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*8.0VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*8.1VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*8.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
  • cpe:2.3:a:python:python:*:*:*:*:*:*:*:* Versions 2.7.0 to before 2.7.16; 3.4.0 to before 3.4.10; 3.5.0 to before 3.5.7; 3.6.0 to before 3.6.9; 3.7.0 to before 3.7.3 Vulnerable ·python-pillow
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* Versions 15.1 Vulnerable ·openSUSE
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:* Versions 8.1 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:* Versions 8.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
Show 4 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:*8.6VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*8.2VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*8.4VulnerableRed Hat
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*8.6VulnerableRed Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:* Versions 8.6 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:* Versions 8.2 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:* Versions 8.4 Vulnerable ·Red Hat
  • cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:* Versions 8.6 Vulnerable ·Red Hat

Remediation

Red Hat 3 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-2019:3520 Released 2019-11-05 · Red Hat rating Moderate
    python3 security and bug fix update
    • Red Hat Enterprise Linux AppStream (v. 8) platform-python-3.6.8-15.1.el8, platform-python-debug-3.6.8-15.1.el8, platform-python-devel-3.6.8-15.1.el8 +3
    • Red Hat Enterprise Linux BaseOS (v. 8) platform-python-3.6.8-15.1.el8, python3-3.6.8-15.1.el8, python3-libs-3.6.8-15.1.el8 +1
  • 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

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Software CollectionsAffectedNo fix planned: Will not fix
Red Hat Ansible Tower 3.4 for RHEL 7 ServerFixed—
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2019:3520
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2019:3520
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 Optional (v. 7)Fixed RHSA-2019:2030
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:2030
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:2030
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 Software Collections for Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2019:3725
Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:3725
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.5)Fixed RHSA-2019:3725
Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.6)Fixed 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-2019:3725
Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:3725
Not affected: 3 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-5010
  2. 2026-10-03 Alias added: GHSA-jj99-2g8j-7j25
  3. 2026-10-07 CISA SSVC decision points changed

References

Exploit 1

Advisory 6

Other 1

Sources

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