Insufficient Entropy in The Pallets Projects Werkzeug



Published: 2020-04-09
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE ID N/A
CWE ID CWE-331
Exploitation vector Local
Public exploit N/A
Vulnerable software
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Werkzeug
Web applications / JS libraries

Vendor The Pallets Projects

Security Advisory

This security advisory describes one low risk vulnerability.

1) Insufficient Entropy

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 - Insufficient Entropy

Exploit availability: No

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, 0.2, 0.3

CPE External links

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

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.



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