SB2024111507 - Improper IP address validation in Python
Published: November 15, 2024
Security Bulletin ID
SB2024111507
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Input validation error (CVE-ID: CVE-2024-11168)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass security restrictions.
The vulnerability exists due to insufficient validation of bracketed hosts (e.g. []) within the urllib.parse.urlsplit() and urlparse() functions allowing hosts that weren't IPv6 or IPvFuture. A remote attacker can pass specially crafted IP address to the application to bypass implemented IP-based security checks or perform SSRF attacks.
Remediation
Install update from vendor's website.
References
- https://github.com/python/cpython/commit/29f348e232e82938ba2165843c448c2b291504c5
- https://github.com/python/cpython/pull/103849
- https://github.com/python/cpython/issues/103848
- https://mail.python.org/archives/list/security-announce@python.org/thread/XPWB6XVZ5G5KGEI63M4AWLIEUF5BPH4T/
- https://github.com/python/cpython/commit/b2171a2fd41416cf68afd67460578631d755a550