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Bug 1569424 - (CVE-2018-1172) CVE-2018-1172 squid: Incorrect pointer handling when processing ESI responses allows denial of service
CVE-2018-1172 squid: Incorrect pointer handling when processing ESI responses...
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
low Severity low
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Assigned To: Red Hat Product Security
impact=low,public=20180418,reported=2...
: Security
Depends On: 1570082
Blocks: 1569427
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Reported: 2018-04-19 05:22 EDT by Adam Mariš
Modified: 2018-05-24 15:30 EDT (History)
6 users (show)

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Fixed In Version: squid 4.0.13
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Doc Text:
it was found that Squid, when used as a reverse proxy, did not handle ESI responses properly. A malicious web server could use this flaw to crash Squid.
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Description Adam Mariš 2018-04-19 05:22:08 EDT 
Due to incorrect pointer handling Squid is vulnerable to denial of service attack when processing ESI responses. This problem allows a remote server delivering ESI responses to trigger a denial of service for all clients accessing the Squid service. This problem is limited to Squid operating as reverse proxy.

Affected versions: Squid 3.1.12.2 -> 3.1.23, Squid 3.2.0.8 -> 3.2.14, Squid 3.3 -> 4.0.12

Fixed in version: Squid 4.0.13

External References:

http://www.squid-cache.org/Advisories/SQUID-2018_3.txt
Comment 1 Cedric Buissart 2018-04-20 11:23:00 EDT 
Statement:

This issue affects the versions of squid and squid34 as shipped with Red Hat Enterprise Linux 6. Red Hat Enterprise Linux 6 is now in Maintenance Support 2 Phase of the support and maintenance life cycle. This has been rated as having Low security impact and is not currently planned to be addressed in future updates. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
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