CVE-2023-24329: Input Validation

Published Feb 17, 2023
·
Updated

An issue in the urllib.parse component of Python before 3.11.4 allows attackers to bypass blocklisting methods by supplying a URL that starts with blank characters.

Other sources

An issue in the urllib.parse component of Python before v3.11 allows attackers to bypass blocklisting methods by supplying a URL that starts with blank characters.

https://pointernull.com/security/python-url-parse-problem.html https://github.com/python/cpython/pull/99421

— Red Hat

Python could allow a remote attacker to bypass security restrictions, caused by a flaw in the urllib.parse component. By sending a specially-crafted request using URL starts with blank characters, an attacker could exploit this vulnerability to bypass blocklisting methods.

— IBM

Affected Software

28 affected componentsFixes available
redhat/python<3.11
3.11
debian/pypy3<=7.3.5+dfsg-2+deb11u2
7.3.5+dfsg-2+deb11u47.3.11+dfsg-2+deb12u37.3.19+dfsg-1
debian/python2.7
2.7.18-8+deb11u1
debian/python3.11
3.11.2-6+deb12u53.11.2-6+deb12u3
debian/python3.9<=3.9.2-1
3.9.2-1+deb11u3
Python Python<3.7.17
Python Python>=3.8.0<3.8.17
Python Python>=3.9.0<3.9.17
Python Python>=3.10.0<3.10.12
Python Python>=3.11.0<3.11.4
Fedoraproject Fedora=36
Fedoraproject Fedora=37
Fedoraproject Fedora=38
NetApp Active Iq Unified Manager Vmware Vsphere
NetApp Active Iq Unified Manager Windows
NetApp Management Services For Element Software
NetApp Management Services For Netapp Hci
NetApp ONTAP Select Deploy administration utility
F5 BIG-IP=17.5.0, >=17.1.0<=17.1.2
17.5.117.1.3
F5 BIG-IP>=16.1.0<=16.1.6
F5 BIG-IP>=15.1.0<=15.1.10
F5 BIG-IP>=14.1.0<=14.1.5
F5 BIG-IP>=13.1.0<=13.1.5
F5 BIG-IP Next CNF=1.1.0
F5 BIG-IP Next SPK>=1.5.0<=1.8.0
F5 BIG-IQ Centralized Management>=8.0.0<=8.4.0
8.4.1
F5 F5OS-A>=1.5.0<=1.5.1, =1.4.0, >=1.3.0<=1.3.2
1.7.0
F5 F5OS-C>=1.5.0<=1.5.1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/pypy3 to a version that resolves this vulnerability.

    Fixed in 7.3.5+dfsg-2+deb11u4Fixed in 7.3.11+dfsg-2+deb12u3Fixed in 7.3.19+dfsg-1
  2. Upgrade

    Upgrade debian/python2.7 to a version that resolves this vulnerability.

    Fixed in 2.7.18-8+deb11u1
  3. Upgrade

    Upgrade debian/python3.11 to a version that resolves this vulnerability.

    Fixed in 3.11.2-6+deb12u5Fixed in 3.11.2-6+deb12u3
  4. Upgrade

    Upgrade debian/python3.9 to a version that resolves this vulnerability.

    Fixed in 3.9.2-1+deb11u3
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 17.5.117.1.3
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 8.4.1
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 1.7.0
  8. Upgrade

    Upgrade redhat/python to a version that resolves this vulnerability.

    Fixed in 3.11
  9. Upgrade

    Upgrade debian/pypy3 to a version that resolves this vulnerability.

    Fixed in 7.3.5+dfsg-2+deb11u4
  10. Upgrade

    Upgrade debian/pypy3 to a version that resolves this vulnerability.

    Fixed in 7.3.11+dfsg-2+deb12u3
  11. Upgrade

    Upgrade debian/pypy3 to a version that resolves this vulnerability.

    Fixed in 7.3.19+dfsg-1
  12. Upgrade

    Upgrade debian/python3.11 to a version that resolves this vulnerability.

    Fixed in 3.11.2-6+deb12u5
  13. Upgrade

    Upgrade debian/python3.11 to a version that resolves this vulnerability.

    Fixed in 3.11.2-6+deb12u3
  14. Upgrade

    Upgrade python to a version that resolves this vulnerability.

    Fixed in 3.11.4

Event History

Feb 17, 2023
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
Description
Data Sourced
via NVD·03:15 PM
RemedyDescriptionSeverityWeaknessAffected Software
Feb 28, 2023
Data Sourced
via Red Hat·12:13 PM
DescriptionSeverityAffected Software
Aug 21, 2023
Advisory Published
via F5·10:17 PM
Data Sourced
via F5·10:17 PM
DescriptionSeverityWeaknessAffected Software
Jan 12, 2024
Data Sourced
via Launchpad·06:02 PM
Description
Jan 6, 2025
Data Sourced
via Ubuntu·06:52 PM
RemedyDescriptionSeverityAffected Software
Feb 4, 2025
Data Sourced
via IBM·12:00 AM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is CVE-2023-24329?

CVE-2023-24329 is an issue in the urllib.parse component of Python before version 3.11.4 that allows attackers to bypass blocklisting methods.

2

How severe is CVE-2023-24329?

CVE-2023-24329 has a severity rating of high (7).

3

Which software versions are affected by CVE-2023-24329?

CVE-2023-24329 affects Python versions up to but excluding 3.11.4.

4

How can the vulnerability be fixed?

To fix the vulnerability, users should update their Python installation to version 3.11.4 or later.

5

Where can I find more information about CVE-2023-24329?

More information about CVE-2023-24329 can be found at the following references: [link1](https://pointernull.com/security/python-url-parse-problem.html), [link2](https://github.com/python/cpython/pull/99421), [link3](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2174012).

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