Vulnerability identifier: #VU26108
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-400
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
urllib3
Web applications /
Modules and components for CMS
Vendor: urlib3
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an inefficient algorithm in the "_encode_invalid_chars" function in "util/url.py". A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
urllib3: 1.25.2 - 1.25.7
External links
http://github.com/urllib3/urllib3/blob/master/CHANGES.rst
http://github.com/urllib3/urllib3/commit/a74c9cfbaed9f811e7563cfc3dce894928e0221a
http://pypi.org/project/urllib3/1.25.8/
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.