Bug 1359203 (CVE-2016-5408)

Summary:	CVE-2016-5408 squid: Buffer overflow vulnerability in cachemgr.cgi tool
Product:	[Other] Security Response	Reporter:	Adam Mariš <amaris>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	cbuissar, henrik, jonathansteffan, luhliari, psimerda, thozza
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	squid 3.5.17, squid 4.0.9	Doc Type:	If docs needed, set a value
Doc Text:	It was found that the fix for CVE-2016-4051 released via RHSA-2016:1138 did not properly prevent the stack overflow in the munge_other_line() function. A remote attacker could send specially crafted data to the Squid proxy, which would exploit the cachemgr CGI utility, possibly triggering execution of arbitrary code.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-08-04 13:11:09 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1359204, 1359205, 1359206, 1359207
Bug Blocks:	1359209

Description Adam Mariš 2016-07-22 13:54:58 UTC

Due to incorrect buffer management Squid cachemgr.cgi tool is vulnerable to a buffer overflow when processing remotely supplied inputs relayed to it from Squid.

This CVE is for an incomplete fix for CVE-2016-4051 as applied to squid packages in Red Hat Enterprise Linux 6, released via RHSA-2016:1138.

Upstream advisory for the original issue CVE-2016-4051:

http://www.squid-cache.org/Advisories/SQUID-2016_5.txt

Red Hat Enterprise Linux 6 erratum with the incomplete fix:

https://rhn.redhat.com/errata/RHSA-2016-1138.html

External Reference:

(none)

Comment 4 Cedric Buissart 2016-08-01 13:23:54 UTC

Acknowledgments:

Name: Amos Jeffries (Squid)

Comment 6 errata-xmlrpc 2016-08-04 12:25:45 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2016:1573 https://rhn.redhat.com/errata/RHSA-2016-1573.html