Input validation error in Python - CVE-2019-9636

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Main Vulnerability Database Vulnerabilities #VU18355

Input validation error in Python - CVE-2019-9636

Published: April 27, 2019


Vulnerability identifier: #VU18355
CSH Severity: Medium
CVSS v4: 7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-9636
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied input when processing data in Unicode encoding with an incorrect netloc during NFKC normalization. A remote attacker can gain access to sensitive information.


Affected software

Python
Amazon Linux AMI
Arch Linux
Gentoo Linux
Fedora
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for Power
Ubuntu
Opensuse
python2-tkinter (Alpine package)
python3.5-minimal (Ubuntu package)
python3.5 (Ubuntu package)
python3.7-minimal (Ubuntu package)
python3.7 (Ubuntu package)
python3.6-minimal (Ubuntu package)
python3.6 (Ubuntu package)
python3.9-minimal (Ubuntu package)
python3.9 (Ubuntu package)
python3.8-minimal (Ubuntu package)
python3.8 (Ubuntu package)
python3.11-minimal (Ubuntu package)
python3.11 (Ubuntu package)
python27-python (Red Hat package)
python34
rh-python35-python (Red Hat package)
python35
rh-python36-python (Red Hat package)
python36
python3
python3-docs
python3.10-minimal (Ubuntu package)
python3.10 (Ubuntu package)
python3.12-minimal (Ubuntu package)
python3.12 (Ubuntu package)
redhat-release-virtualization-host (Red Hat package)
rhvm-appliance (Red Hat package)
redhat-virtualization-host (Red Hat package)
Red Hat Virtualization Host
Sun ZFS Storage Appliance Kit
Data Computing Appliance (DCA)
Dell PowerProtect Cyber Recovery
Dell EMC Unity Operating Environment (OE)
Dell EMC Unity XT Operating Environment (OE)
Dell EMC Unity VSA Operating Environment (OE)
IBM Robotic Process Automation

How to mitigate CVE-2019-9636

Install updates from vendor's website.

Python - update to 3.7.3
python2-tkinter (Alpine package) - update to 2.7.17-r0
python3.5-minimal (Ubuntu package) - update to Ubuntu Pro
python3.5 (Ubuntu package) - update to Ubuntu Pro (Infra-only)
python3.7-minimal (Ubuntu package) - update to Ubuntu Pro
python3.7 (Ubuntu package) - update to Ubuntu Pro
python3.6-minimal (Ubuntu package) - update to Ubuntu Pro
python3.6 (Ubuntu package) - update to Ubuntu Pro
python3.9-minimal (Ubuntu package) - update to Ubuntu Pro
python3.9 (Ubuntu package) - update to Ubuntu Pro
python3.8-minimal (Ubuntu package) - addressed in versions Ubuntu Pro, 3.8.10-0ubuntu1~20.04.10
python3.8 (Ubuntu package) - addressed in versions Ubuntu Pro, 3.8.10-0ubuntu1~20.04.10
python3.11-minimal (Ubuntu package) - addressed in versions Ubuntu Pro, 3.11.6-3ubuntu0.1
python3.11 (Ubuntu package) - addressed in versions Ubuntu Pro, 3.11.6-3ubuntu0.1
python27-python (Red Hat package) - addressed in versions 2.7.13-4.el6, 2.7.13-6.el7
python34 - addressed in versions 3.4.10-1.fc28, 3.4.10-1.fc29, 3.4.10-1.fc30, 3.4.10-2.fc29, 3.4.10-2.fc30, 3.4.10-3.fc29, 3.4.10-3.fc30, 3.4.10-4.el6, 3.4.10-4.el7, 3.4.10-5.fc31, 3.4.10-6.fc31
rh-python35-python (Red Hat package) - addressed in versions 3.5.1-12.el6, 3.5.1-12.el7
Data Computing Appliance (DCA) - update to 3.5.4.0
python35 - addressed in versions 3.5.7-1.fc28, 3.5.7-1.fc29, 3.5.7-1.fc30, 3.5.8-2.fc29, 3.5.8-2.fc30, 3.5.8-2.fc31
rh-python36-python (Red Hat package) - addressed in versions 3.6.3-4.el6, 3.6.3-7.el7
python36 - addressed in versions 3.6.8-1.el7, 3.6.9-1.fc29, 3.6.9-1.fc30
python3 - addressed in versions 3.6.8-3.fc28, 3.7.2-5.fc29, 3.7.2-8.fc30, 3.7.3-3.fc29, 3.7.3-3.fc30, 3.7.4-1.fc29, 3.7.4-1.fc30
python3-docs - addressed in versions 3.7.4-1.fc29, 3.7.4-1.fc30
python3.10-minimal (Ubuntu package) - update to 3.10.12-1~22.04.4
python3.10 (Ubuntu package) - update to 3.10.12-1~22.04.4
python3.12-minimal (Ubuntu package) - update to 3.12.0-1ubuntu0.1
python3.12 (Ubuntu package) - update to 3.12.0-1ubuntu0.1
redhat-release-virtualization-host (Red Hat package) - update to 4.2-8.4.el7
rhvm-appliance (Red Hat package) - update to 4.2-20190411.1.el7
redhat-virtualization-host (Red Hat package) - update to 4.2-20190411.1.el7_6
Dell EMC Unity Operating Environment (OE) - update to 5.0.2.0.5.009
Dell EMC Unity XT Operating Environment (OE) - update to 5.0.2.0.5.009
Dell EMC Unity VSA Operating Environment (OE) - update to 5.0.2.0.5.009
Dell PowerProtect Cyber Recovery - update to 18.1.1.2-8
IBM Robotic Process Automation - update to 21.0.5

External References

Related Security Bulletins