3.5 Low
CVSS3
Attack Vector
ADJACENT
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
0.001 Low
EPSS
Percentile
21.7%
Werkzeug 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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | python-werkzeug | < 2.2.2-3 | python-werkzeug_2.2.2-3_all.deb |
Debian | 11 | all | python-werkzeug | < 1.0.1+dfsg1-2+deb11u1 | python-werkzeug_1.0.1+dfsg1-2+deb11u1_all.deb |
Debian | 10 | all | python-werkzeug | < 0.14.1+dfsg1-4+deb10u2 | python-werkzeug_0.14.1+dfsg1-4+deb10u2_all.deb |
Debian | 999 | all | python-werkzeug | < 2.2.2-3 | python-werkzeug_2.2.2-3_all.deb |
Debian | 13 | all | python-werkzeug | < 2.2.2-3 | python-werkzeug_2.2.2-3_all.deb |