Bug 1871702 (CVE-2020-15811) - CVE-2020-15811 squid: HTTP Request Splitting could result in cache poisoning
Summary: CVE-2020-15811 squid: HTTP Request Splitting could result in cache poisoning
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-15811
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1871704 1872342 1872343 1872344 1872345 1872346
Blocks: 1871707
TreeView+ depends on / blocked
 
Reported: 2020-08-24 04:59 UTC by Michael Kaplan
Modified: 2023-12-15 18:58 UTC (History)
5 users (show)

Fixed In Version: squid 4.13, squid 5.0.4
Clone Of:
Environment:
Last Closed: 2020-09-03 19:17:46 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:3623 0 None None None 2020-09-03 13:01:01 UTC
Red Hat Product Errata RHSA-2020:4082 0 None None None 2020-09-30 07:01:12 UTC

Description Michael Kaplan 2020-08-24 04:59:06 UTC 
Due to incorrect data validation Squid is vulnerable to HTTP Request Splitting
attacks against HTTP and HTTPS traffic. This leads to cache poisoning.

Upstream Advisory:

https://github.com/squid-cache/squid/security/advisories/GHSA-c7p8-xqhm-49wv

Affected Versions: 2.7-3.5.28, 4.0-4.12, 5.0.1-5.0.3 
Fixed Versions: 4.13, 5.0.4
Comment 1 Michael Kaplan 2020-08-24 05:01:17 UTC 
Created squid tracking bugs for this issue:

Affects: fedora-all [bug 1871704]
Comment 3 Cedric Buissart 2020-08-27 07:31:24 UTC 
Upstream commit:
https://github.com/squid-cache/squid/commit/fd68382860633aca92065e6c343cfd1b12b126e7
Comment 4 Cedric Buissart 2020-08-27 07:33:25 UTC 
Mitigation:

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

```
relaxed_header_parser off
```
Comment 6 errata-xmlrpc 2020-09-03 13:00:58 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 19:17:46 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-2020-15811
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
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