#VU21765 Permissions, Privileges, and Access Controls in Jinja - CVE-2019-10906

Vulnerability identifier: #VU21765

Vulnerability risk: Medium

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

CVE-ID: CVE-2019-10906

CWE-ID: CWE-264

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Jinja
Web applications / Modules and components for CMS

Vendor: The Pallets Projects

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the "str.format_map" allows a sandbox escape. A remote attacker can bypass implemented security restrictions.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Jinja: 2.0 - 2.10

---

External links
https://palletsprojects.com/blog/jinja-2-10-1-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.