Medium severity · published Mar 8, 2021
CVE-2021-21337
Products.PluggableAuthService is a pluggable Zope authentication and authorization framework
6.1
CVSS
8.4%
EPSS
No
On KEV
Description
Products.PluggableAuthService is a pluggable Zope authentication and authorization framework. In Products.PluggableAuthService before version 2.6.0 there is an open redirect vulnerability. A maliciously crafted link to the login form and login functionality could redirect the browser to a different website. The problem has been fixed in version 2.6.1. Depending on how you have installed Products.PluggableAuthService, you should change the buildout version pin to `2.6.1` and re-run the buildout, or if you used `pip` simply do `pip install "Products.PluggableAuthService>=2.6.1".
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)8.4% · higher than 95% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
Products.pluggableauthservice · Zope
before 2.6.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21337
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21337
Exploit
http://packetstormsecurity.com/files/162911/Products.PluggableAuthService-2.6.0-Open-Redirect.html
Patch
https://github.com/zopefoundation/Products.PluggableAuthService/commit/7eead067898852ebd3e0f143bc51295928528dfa
Third Party Advisory
https://github.com/zopefoundation/Products.PluggableAuthService/security/advisories/GHSA-p44j-xrqg-4xrr
Product
https://pypi.org/project/Products.PluggableAuthService/
More from Products.pluggableauthservice
6.5
CVE-2021-21336
Products.PluggableAuthService is a pluggable Zope authentication and authorization framework