SB2021060234 - Ubuntu update for python-django
Published: June 2, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) HTTP response splitting (CVE-ID: CVE-2021-32052)
The vulnerability allows a remote attacker to perform HTTP splitting attacks.
The vulnerability exists due to software does not correctly processes CRLF character sequences in URLValidator. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.
Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.
Note, the vulnerability affects Django installations on Python 3.9.5+.
2) Path traversal (CVE-ID: CVE-2021-33203)
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences within the "admindocs" view. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.
3) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2021-33571)
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input in the "URLValidator", "validate_ipv4_address()" and "validate_ipv46_address()" . A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
Remediation
Install update from vendor's website.