Fedora 26 update for python-notebook

1) Security restrictions bypass

EUVDB-ID: #VU12114

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2018-8768

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote unauthenticated attacker to execute arbitrary code with elevated privileges on the target system.

The weakness exists due improper sanitization of notebook files. The jQuery component fixes invalid HTML after sanitization. A remote attacker can trick the victim into opening a specially crafted notebook file, execute arbitrary JavaScript code with root privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 26

python-notebook: before 5.0.0-2.fc26

CPE2.3

• cpe:2.3:o:fedoraproject:fedora:26:*:*:*:*:*:*:*
• cpe:2.3:a:fedoraproject:python-notebook:*:*:*:*:*:fedora:*:*

External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-ddb95c8324

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.