USN-5201-1: Python vulnerabilities
It was discovered that the Python urllib http client could enter into an infinite loop when incorrectly handling certain server responses (100 Continue response). Specially crafted traffic from a malicious HTTP server could cause a denial of service (Dos) condition for a client.
Affected Software
Event History
Frequently Asked Questions
What is the vulnerability ID for this advisory?
The vulnerability ID for this advisory is USN-5201-1.
What is the title of the advisory?
The title of the advisory is USN-5201-1: Python vulnerabilities.
What is the description of the vulnerability?
The Python urllib http client could enter into an infinite loop when incorrectly handling certain server responses, causing a denial of service (DoS) condition for a client.
Which products are affected by this vulnerability?
The vulnerability affects Ubuntu 21.04 and Ubuntu 20.04.
Where can I find more information about the vulnerability?
You can find more information about the vulnerability in the following references: [CVE-2021-3737](https://ubuntu.com/security/CVE-2021-3737), [USN-5083-1](https://ubuntu.com/security/notices/USN-5083-1), [USN-5199-1](https://ubuntu.com/security/notices/USN-5199-1).