Vulnerability identifier: #VU26753

Vulnerability risk: Low

CVSSv3.1: 2.6 [CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-331

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Werkzeug
Web applications / JS libraries

Vendor: The Pallets Projects

Description

The vulnerability allows a local attacker to gain access to sensitive information on the system.

The vulnerability exists due to the secure cookies created as part of "werkzeug.contrib.securecookie" are generate through weak hashing which deviates from security best practice. A local attacker can gain access to sensitive information on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Werkzeug: 0.1 - 0.3

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External links
http://snyk.io/vuln/SNYK-PYTHON-WERKZEUG-564340
http://github.com/pallets/werkzeug/commit/84eabcaa81f60d47939ac2d43f01d01eeab598a4
http://github.com/pallets/werkzeug/blob/master/CHANGES.rst#version-031

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.