CVE-2023-23934

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.

Database specific

{
    "cwe_ids": [
        "CWE-20"
    ]
}

References

Affected packages

Git / github.com/pallets/werkzeug

Affected ranges

Type: GIT
Repo: https://github.com/pallets/werkzeug
Events: Introduced

0 Unknown introduced commit / All previous commits are affected

Fixed

22a254fca2ad0130adbbcbd11d3de51bcb04a08b

Affected versions

0.*

0.1

0.10

0.10.1

0.10.2

0.10.3

0.10.4

0.11

0.11.1

0.11.10

0.11.11

0.11.12

0.11.13

0.11.14

0.11.15

0.11.2

0.11.3

0.11.4

0.11.5

0.11.6

0.11.7

0.11.8

0.11.9

0.12

0.12.1

0.12.2

0.13

0.14

0.14.1

0.14.x

0.15.0

0.15.1

0.15.2

0.15.3

0.15.4

0.15.5

0.15.6

0.15.x

0.16.0

0.16.1

0.16.x

0.2

0.3

0.3.1

0.4

0.4.1

0.5

0.5.1

0.6

0.6.1

0.6.2

0.7

0.8

0.8.1

0.8.2

0.8.3

0.9

0.9.1

0.9.2

0.9.3

0.9.4

0.9.5

0.9.6

1.*

1.0.0

1.0.0rc1

1.0.1

1.0.x

2.*

2.0.0

2.0.0rc1

2.0.0rc2

2.0.0rc3

2.0.0rc4

2.0.0rc5

2.0.1

2.0.2

2.0.3

2.0.x

2.1.0

2.1.1

2.1.2

2.1.x

2.2.0

2.2.0a1

2.2.1

2.2.2