Bug 1817121 (CVE-2019-18860) - CVE-2019-18860 squid: Mishandled HTML in the host parameter to cachemgr.cgi results in insecure behaviour
Summary: CVE-2019-18860 squid: Mishandled HTML in the host parameter to cachemgr.cgi r...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-18860
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1820663 1820664
Blocks: 1817125
TreeView+ depends on / blocked
 
Reported: 2020-03-25 15:46 UTC by Michael Kaplan
Modified: 2024-05-28 02:35 UTC (History)
5 users (show)

Fixed In Version: Squid 4.9
Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in squid. Squid, when certain web browsers are used, mishandles HTML in the host parameter to cachemgr.cgi which could result in squid behaving in unsecure way.
Clone Of:
Environment:
Last Closed: 2020-11-04 02:24:48 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:4743 0 None None None 2020-11-04 03:31:57 UTC

Description Michael Kaplan 2020-03-25 15:46:18 UTC 
In Squid before 4.9, when certain web browsers are used, mishandles HTML in the host parameter to cachemgr.cgi which could result in squid behaving in unsecure way
Comment 1 Michael Kaplan 2020-03-25 15:47:44 UTC 
External References:

https://github.com/squid-cache/squid/pull/504
Comment 2 Stefan Cornelius 2020-03-31 11:16:24 UTC 
Mitigation:

The cachemgr.cgi script is not used by default. If you've set this up manually and are worried about this issue, remove it from your server.
Comment 6 Product Security DevOps Team 2020-11-04 02:24:48 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-18860
Comment 7 errata-xmlrpc 2020-11-04 03:31:55 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:4743 https://access.redhat.com/errata/RHSA-2020:4743
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