CVE-2023-23934

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Summary

CVECVE-2023-23934
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-02-14 20:15:00 UTC
Updated2023-08-18 14:15:00 UTC
DescriptionWerkzeug is a comprehensive WSGI web application library. Browsers may allow "nameless" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3.

Risk And Classification

Problem Types: CWE-20

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Palletsprojects Werkzeug All All All All

References

ReferenceSourceLinkTags
Release 2.2.3 · pallets/werkzeug · GitHub MISC github.com
Merge pull request from GHSA-px8h-6qxv-m22q · pallets/werkzeug@cf275f4 · GitHub MISC github.com
February 2023 Werkzeug Vulnerabilities in NetApp Products | NetApp Product Security MISC security.netapp.com
cookie prefixed with `=` can shadow unprefixed cookie · Advisory · pallets/werkzeug · GitHub MISC github.com
Debian -- Security Information -- DSA-5470-1 python-werkzeug MISC www.debian.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 160842 Oracle Enterprise Linux Security Update for python-werkzeug (ELSA-2023-12709)
  • 181616 Debian Security Update for python-werkzeug (DLA 3346-1)
  • 182278 Debian Security Update for python-werkzeug (CVE-2023-23934)
  • 199235 Ubuntu Security Notification for Werkzeug Vulnerabilities (USN-5948-1)
  • 199431 Ubuntu Security Notification for Werkzeug Vulnerabilities (USN-5948-2)
  • 283790 Fedora Security Update for mingw (FEDORA-2023-af75e27098)
  • 284255 Fedora Security Update for mingw (FEDORA-2023-8d94dccc7e)
  • 355112 Amazon Linux Security Advisory for python-werkzeug : ALAS2023-2023-149
  • 6000024 Debian Security Update for python-werkzeug (DSA 5470-1)
  • 673119 EulerOS Security Update for python-werkzeug (EulerOS-SA-2023-2167)
  • 905561 Common Base Linux Mariner (CBL-Mariner) Security Update for python-werkzeug (13589)
  • 906614 Common Base Linux Mariner (CBL-Mariner) Security Update for python-werkzeug (13589-3)
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