Bug 1871700 (CVE-2020-15810)

Summary: CVE-2020-15810 squid: HTTP Request Smuggling could result in cache poisoning
Product: [Other] Security Response Reporter: Michael Kaplan <mkaplan>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: anon.amish, code, jonathansteffan, luhliari, yozone
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: squid 4.13, squid 5.0.4 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in squid. Due to incorrect data validation, a HTTP Request Smuggling attack against HTTP and HTTPS traffic is possible leading to cache poisoning. The highest threat from this vulnerability is to data confidentiality and integrity.
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-09-03 19:17:43 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1871701, 1872327, 1872328, 1872329, 1872330, 1872331    
Bug Blocks: 1871707    

Description Michael Kaplan 2020-08-24 04:53:32 UTC
Due to incorrect data validation Squid is vulnerable to HTTP Request Smuggling
attacks against HTTP and HTTPS traffic. This leads to cache poisoning.

Upstream Advisory:


Affected Versions: 2.5-3.5.28, 4.0-4.12, 5.0.1-5.0.3
Fixed Versions: 4.13, 5.0.4

Comment 1 Michael Kaplan 2020-08-24 04:55:19 UTC
Created squid tracking bugs for this issue:

Affects: fedora-all [bug 1871701]

Comment 4 Cedric Buissart 2020-08-27 07:33:40 UTC

Disable the relaxed HTTP parser in `squid.conf`:

relaxed_header_parser off

Comment 6 errata-xmlrpc 2020-09-03 13:00:55 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions
  Red Hat Enterprise Linux 8.1 Extended Update Support
  Red Hat Enterprise Linux 8

Via RHSA-2020:3623 https://access.redhat.com/errata/RHSA-2020:3623

Comment 7 Product Security DevOps Team 2020-09-03 19:17:43 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Comment 9 errata-xmlrpc 2020-09-30 07:01:10 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:4082 https://access.redhat.com/errata/RHSA-2020:4082