Bug 1770365 (CVE-2019-18677) - CVE-2019-18677 squid: Cross-Site Request Forgery issue in HTTP Request processing
Summary: CVE-2019-18677 squid: Cross-Site Request Forgery issue in HTTP Request proces...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-18677
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: 1770367 1771279 1771280
Blocks: 1770369
TreeView+ depends on / blocked
 
Reported: 2019-11-08 19:56 UTC by Pedro Sampaio
Modified: 2023-03-24 15:57 UTC (History)
6 users (show)

Fixed In Version: squid 4.9
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-11-04 02:23:03 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:4743 0 None None None 2020-11-04 03:31:23 UTC

Description Pedro Sampaio 2019-11-08 19:56:48 UTC 
Due to incorrect message processing Squid configured with append_domain can inappropriately redirect traffic to origins it should not be delivered to.

References:

http://www.squid-cache.org/Advisories/SQUID-2019_9.txt
Comment 1 Pedro Sampaio 2019-11-08 19:57:05 UTC 
Created squid tracking bugs for this issue:

Affects: fedora-all [bug 1770367]
Comment 2 Huzaifa S. Sidhpurwala 2019-11-12 05:45:32 UTC 
Upstream patches:
http://www.squid-cache.org/Versions/v3/3.5/changesets/squid-3.5-e5f1813a674848dde570f7920873e1071f96e0b4.patch
http://www.squid-cache.org/Versions/v4/changesets/squid-4-36492033ea4097821a4f7ff3ddcb971fbd1e8ba0.patch
Comment 3 Huzaifa S. Sidhpurwala 2019-11-12 05:45:35 UTC 
External References:

http://www.squid-cache.org/Advisories/SQUID-2019_9.txt
Comment 4 Huzaifa S. Sidhpurwala 2019-11-12 05:45:40 UTC 
Mitigation:

As per upstream:

Remove append_domain configuration settings from squid.conf.
The append_domain feature is redundant when /etc/resolv.conf  is used to determine hostnames. However, please note that use of /etc/resolv.conf may require removal of dns_nameservers and other redundant DNS directives.
Comment 6 Product Security DevOps Team 2020-11-04 02:23:03 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-2019-18677
Comment 7 errata-xmlrpc 2020-11-04 03:31:21 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
Note You need to log in before you can comment on or make changes to this bug.