Ubuntu update for python2.7

1) Input validation error

EUVDB-ID: #VU72618

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-24329

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented filters.

The vulnerability exists due to insufficient validation of URLs that start with blank characters within urllib.parse component of Python. A remote attacker can pass specially crafted URL to bypass existing filters.

Mitigation

Update the affected package python2.7 to the latest version.

Vulnerable software versions

Ubuntu: 14.04 - 22.10

python3.6 (Ubuntu package): before 3.6.9-1~18.04ubuntu1.12

python2.7 (Ubuntu package): before Ubuntu Pro (Infra-only)

python3.8 (Ubuntu package): before 3.8.10-0ubuntu1~20.04.7

python3.10 (Ubuntu package): before 3.10.6-1~22.04.2ubuntu1

python3.5 (Ubuntu package): before Ubuntu Pro (Infra-only)

CPE2.3

• cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:18.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:22.10:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:python36_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:python27_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:python3.8_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:python3.10_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:o:canonical:python35_ubuntu_package:*:*:*:*:*:ubuntu:*:*

External links

https://ubuntu.com/security/notices/USN-5960-1

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.