// For flags

CVE-2024-11168

Improper validation of IPv6 and IPvFuture addresses

Severity Score

6.3
*CVSS v4

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

The urllib.parse.urlsplit() and urlparse() functions improperly validated bracketed hosts (`[]`), allowing hosts that weren't IPv6 or IPvFuture. This behavior was not conformant to RFC 3986 and potentially enabled SSRF if a URL is processed by more than one URL parser.

A flaw was found in Python. The `urllib.parse.urlsplit()` and `urlparse()` functions improperly validated bracketed hosts (`[]`), allowing hosts that weren't IPv6 or IPvFuture compliant. This behavior was not conformant to RFC 3986 and was potentially vulnerable to server-side request forgery (SSRF) if a URL is processed by more than one URL parser.

It was discovered that Python incorrectly handled parsing bracketed hosts. A remote attacker could possibly use this issue to perform a Server-Side Request Forgery attack. This issue only affected python 2.7 and python3.4 on Ubuntu 14.04 LTS; python2.7 on Ubuntu 16.04 LTS; python2.7, python3.6, python3.7, and python3.8 on Ubuntu 18.04 LTS; python2.7 and python3.9 on Ubuntu 20.04 LTS; and python2.7 and python3.11 on Ubuntu 22.04 LTS. It was discovered that Python allowed excessive backtracking while parsing certain tarfile headers. A remote attacker could possibly use this issue to cause Python to consume excessive resources, leading to a denial of service. This issue only affected python3.4 on Ubuntu 14.04 LTS; python3.6, python3.7, and python3.8 on Ubuntu 18.04 LTS; python3.9 on Ubuntu 20.04 LTS; and python3.11 on Ubuntu 22.04 LTS.

*Credits: zer0yu (IPASSLab && ZGC Lab)
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Attack Requirements
Present
Privileges Required
None
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
None
None
Integrity
Low
Low
Availability
None
None
Attack Vector
Network
Attack Complexity
High
Attack Requirements
Present
Privileges Required
None
User Interaction
None
System
Vulnerable | Subsequent
Confidentiality
None
None
Integrity
Low
Low
Availability
None
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2024-11-12 CVE Reserved
  • 2024-11-12 CVE Published
  • 2025-04-11 CVE Updated
  • 2025-07-11 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-918: Server-Side Request Forgery (SSRF)
  • CWE-1287: Improper Validation of Specified Type of Input
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Python Software Foundation
Search vendor "Python Software Foundation"
 CPython
Search vendor "Python Software Foundation" for product "CPython"
 < 3.9.21
Search vendor "Python Software Foundation" for product "CPython" and version " < 3.9.21"
en
Affected
Python Software Foundation
Search vendor "Python Software Foundation"
 CPython
Search vendor "Python Software Foundation" for product "CPython"
 >= 3.10.0 < 3.10.16
Search vendor "Python Software Foundation" for product "CPython" and version " >= 3.10.0 < 3.10.16"
en
Affected
Python Software Foundation
Search vendor "Python Software Foundation"
 CPython
Search vendor "Python Software Foundation" for product "CPython"
 >= 3.11.0 < 3.11.4
Search vendor "Python Software Foundation" for product "CPython" and version " >= 3.11.0 < 3.11.4"
en
Affected