Ubuntu update for python3.5

1) Open redirect

EUVDB-ID: #VU67591

Risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-28861

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data in lib/http/server.py due to missing protection against multiple (/) at the beginning of URI path. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation

Update the affected package python3.5 to the latest version.

Vulnerable software versions

Ubuntu: 16.04

libpython3.5 (Ubuntu package): before 3.5.22ubuntu0~16.04.13+esm5

python3.5-minimal (Ubuntu package): before 3.5.22ubuntu0~16.04.13+esm5

python3.5 (Ubuntu package): before 3.5.22ubuntu0~16.04.13+esm5

libpython3.5-minimal (Ubuntu package): before 3.5.22ubuntu0~16.04.13+esm5

libpython3.5-stdlib (Ubuntu package): before 3.5.22ubuntu0~16.04.13+esm5

CPE2.3

• cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
• cpe:2.3:a:canonical:libpython3.5_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:python3.5-minimal_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:python35_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:libpython3.5-minimal_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:libpython3.5-stdlib_ubuntu_package:*:*:*:*:*:ubuntu:*:*

External links

https://ubuntu.com/security/notices/USN-5629-1

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.