Bug 2252030 (CVE-2023-46218) - CVE-2023-46218 curl: information disclosure by exploiting a mixed case flaw
Summary: CVE-2023-46218 curl: information disclosure by exploiting a mixed case flaw
Keywords:
Status: NEW
Alias: CVE-2023-46218
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2254385 2253142
Blocks: 2252024
TreeView+ depends on / blocked
 
Reported: 2023-11-29 05:48 UTC by Marian Rehak
Modified: 2024-04-02 15:55 UTC (History)
21 users (show)

Fixed In Version: curl 8.5.0
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in curl that verifies a given cookie domain against the Public Suffix List. This issue could allow a malicious HTTP server to set "super cookies" in curl that are passed back to more origins than what is otherwise allowed or possible.
Clone Of:
Environment:
Last Closed:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2024:0428 0 None None None 2024-01-24 16:49:14 UTC
Red Hat Product Errata RHSA-2024:0434 0 None None None 2024-01-24 15:26:05 UTC
Red Hat Product Errata RHSA-2024:0452 0 None None None 2024-01-24 16:40:02 UTC
Red Hat Product Errata RHSA-2024:0585 0 None None None 2024-01-30 13:25:01 UTC
Red Hat Product Errata RHSA-2024:1129 0 None None None 2024-03-05 18:11:02 UTC
Red Hat Product Errata RHSA-2024:1316 0 None None None 2024-03-18 16:34:00 UTC
Red Hat Product Errata RHSA-2024:1317 0 None None None 2024-03-18 16:22:26 UTC
Red Hat Product Errata RHSA-2024:1601 0 None None None 2024-04-02 15:55:05 UTC

Description Marian Rehak 2023-11-29 05:48:42 UTC 
This flaw allows a malicious HTTP server to set "super cookies" in curl that are then passed back to more origins than what is otherwise allowed or possible. This allows a site to set cookies that then would get sent to different and unrelated sites and domains. It could do this by exploiting a mixed case flaw in curl's function that verifies a given cookie domain against the Public Suffix List (PSL). For example a cookie could be set with `domain=co.UK` when the URL used a lower case hostname `curl.co.uk`, even though `co.uk` is listed as a PSL domain.
Comment 2 Pedro Sampaio 2023-12-06 09:39:17 UTC 
This is public now:

https://daniel.haxx.se/blog/2023/12/06/curl-8-5-0/
https://seclists.org/oss-sec/2023/q4/261
Comment 3 Pedro Sampaio 2023-12-06 09:40:28 UTC 
Created curl tracking bugs for this issue:

Affects: fedora-all [bug 2253142]
Comment 10 errata-xmlrpc 2024-01-24 15:26:04 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.0 Extended Update Support

Via RHSA-2024:0434 https://access.redhat.com/errata/RHSA-2024:0434
Comment 11 errata-xmlrpc 2024-01-24 16:40:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Extended Update Support

Via RHSA-2024:0452 https://access.redhat.com/errata/RHSA-2024:0452
Comment 12 errata-xmlrpc 2024-01-24 16:49:13 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:0428 https://access.redhat.com/errata/RHSA-2024:0428
Comment 13 errata-xmlrpc 2024-01-30 13:24:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.8 Extended Update Support

Via RHSA-2024:0585 https://access.redhat.com/errata/RHSA-2024:0585
Comment 14 errata-xmlrpc 2024-03-05 18:11:00 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2024:1129 https://access.redhat.com/errata/RHSA-2024:1129
Comment 15 errata-xmlrpc 2024-03-18 16:22:24 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Core Services

Via RHSA-2024:1317 https://access.redhat.com/errata/RHSA-2024:1317
Comment 16 errata-xmlrpc 2024-03-18 16:33:58 UTC 
This issue has been addressed in the following products:

  JBoss Core Services on RHEL 7
  JBoss Core Services for RHEL 8

Via RHSA-2024:1316 https://access.redhat.com/errata/RHSA-2024:1316
Comment 17 errata-xmlrpc 2024-04-02 15:55:03 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2024:1601 https://access.redhat.com/errata/RHSA-2024:1601
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