SUSE update for python-urllib3

1) Resource exhaustion

EUVDB-ID: #VU54077

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-33503

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper input validation in urllib3 when processing URL with multiple "@" characters in the authority component. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Update the affected package python-urllib3 to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Basesystem: 15-SP3

python3-urllib3: before 1.25.10-4.3.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:python3-urllib3:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20212012-1/

Q & A

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.