CVE-2020-4071

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Summary

CVECVE-2020-4071
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-06-24 13:15:00 UTC
Updated2023-11-07 03:23:00 UTC
DescriptionIn django-basic-auth-ip-whitelist before 0.3.4, a potential timing attack exists on websites where the basic authentication is used or configured, i.e. BASIC_AUTH_LOGIN and BASIC_AUTH_PASSWORD is set. Currently the string comparison between configured credentials and the ones provided by users is performed through a character-by-character string comparison. This enables a possibility that attacker may time the time it takes the server to validate different usernames and password, and use this knowledge to work out the valid credentials. This attack is understood not to be realistic over the Internet. However, it may be achieved from within local networks where the website is hosted, e.g. from inside a data centre where a website's server is located. Sites protected by IP address whitelisting only are unaffected by this vulnerability. This vulnerability has been fixed on version 0.3.4 of django-basic-auth-ip-whitelist. Update to version 0.3.4 as soon as possible and change basic authentication username and password configured on a Django project using this package. A workaround without upgrading to version 0.3.4 is to stop using basic authentication and use the IP whitelisting component only. It can be achieved by not setting BASIC_AUTH_LOGIN and BASIC_AUTH_PASSWORD in Django project settings.

Risk And Classification

Problem Types: CWE-208

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Django-basic-auth-ip-whitelist Project Django-basic-auth-ip-whitelist All All All All
Application Django-basic-auth-ip-whitelist Project Django-basic-auth-ip-whitelist All All All All

References

ReferenceSourceLinkTags
Google Groups groups.google.com
Google Groups MISC groups.google.com Third Party Advisory
Potential timing attack on apps using basic authentication · Advisory · tm-kn/django-basic-auth-ip-whitelist · GitHub CONFIRM github.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 983180 Python (pip) Security Update for django-basic-auth-ip-whitelist (GHSA-m38j-pmg3-v5x5)

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