Sendbox escape in Pallets Jinja

1) Information disclosure

EUVDB-ID: #VU23000

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-10745

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to information disclosure in str.format in Pallets Jinja. A remote attacker can gain unauthorized access to sensitive information and use it to escape sandbox.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Jinja: 2.0 - 2.8

CPE2.3

• cpe:2.3:a:palletsprojects:jinja:2.0:*:*:*:*:python:*:*
• cpe:2.3:a:palletsprojects:jinja:2.1:*:*:*:*:python:*:*
• cpe:2.3:a:palletsprojects:jinja:2.1.1:*:*:*:*:python:*:*

External links

https://access.redhat.com/errata/RHSA-2019:1022
https://access.redhat.com/errata/RHSA-2019:1237
https://access.redhat.com/errata/RHSA-2019:1260
https://github.com/pallets/jinja/commit/9b53045c34e61013dc8f09b7e52a555fa16bed16
https://palletsprojects.com/blog/jinja-281-released/

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.