Bug 1156329 (CVE-2019-12523)

Summary:	VUL-0: CVE-2019-12523,CVE-2019-18676: squid,squid3: improper input validation can lead to access to restricted HTTP servers or denial of service
Product:	[Novell Products] SUSE Security Incidents	Reporter:	Robert Frohl <rfrohl>
Component:	Incidents	Assignee:	Security Team bot <security-team>
Status:	RESOLVED FIXED	QA Contact:	Security Team bot <security-team>
Severity:	Major
Priority:	P3 - Medium	CC:	abergmann, atoptsoglou, stoyan.manolov
Version:	unspecified
Target Milestone:	---
Hardware:	Other
OS:	Other
URL:	https://smash.suse.de/issue/246788/
Whiteboard:	CVSSv3.1:NVD:CVE-2019-12523:9.1:(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N) CVSSv3:RedHat:CVE-2019-12523:7.4:(AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N) CVSSv3:RedHat:CVE-2019-18676:5.9:(AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Robert Frohl 2019-11-08 15:55:41 UTC

Problem Description:

Due to improper input validation Squid is vulnerable to security
bypass attacks. Attacker can gain access to restricted HTTP
servers.

Due to incorrect input validation Squid is vulnerable to a buffer
overflow which can result in Denial of Service to all clients
using the proxy.

__________________________________________________________________

Severity:

Any remote client may access resources which should be restricted
and not available to them. Such as those protected behind client
IP ACLs. Attacker could also gain access to manager services when
Via header is turned off.

Any remote client can perform a Denial of Service on all other
clients using the proxy.

__________________________________________________________________

Updated Packages:

These bugs are fixed by Squid version 4.9.

In addition, a patch addressing this problem for stable releases
can be found in our patch archives:

Squid 4:
<http://www.squid-cache.org/Versions/v4/changesets/squid-4-fbbdf75efd7a5cc244b4886a9d42ea458c5a3a73.patch>

If you are using a prepackaged version of Squid then please refer
to the package vendor for availability information on updated
packages.

__________________________________________________________________

Determining if your version is vulnerable:

Use the command 'squid -v' to view version and build details of
your proxy;

All Squid 2.x have not been checked.
All Squid-3.x up to and including 3.5.28 are vulnerable.
All Squid-4.x up to and including 4.8 are vulnerable.

__________________________________________________________________

Workaround:

Access to manager services can be prevented by enabling the Via
header:
via on

There are no reliable workarounds to prevent access to restricted
upstream servers.

There are no workarounds for the Denial of Service issue.

http://www.squid-cache.org/Advisories/SQUID-2019_8.txt
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12523
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18676

Comment 1 Swamp Workflow Management 2019-11-08 17:00:25 UTC

This is an autogenerated message for OBS integration:
This bug (1156329) was mentioned in
https://build.opensuse.org/request/show/746661 Factory / squid

Comment 3 Swamp Workflow Management 2019-11-14 20:15:26 UTC

SUSE-SU-2019:2975-1: An update that fixes 12 vulnerabilities is now available.

Category: security (important)
Bug References: 1133089,1140738,1141329,1141330,1141332,1141442,1156323,1156324,1156326,1156328,1156329
CVE References: CVE-2019-12523,CVE-2019-12525,CVE-2019-12526,CVE-2019-12527,CVE-2019-12529,CVE-2019-12854,CVE-2019-13345,CVE-2019-18676,CVE-2019-18677,CVE-2019-18678,CVE-2019-18679,CVE-2019-3688
Sources used:
SUSE Linux Enterprise Module for Server Applications 15-SP1 (src):    squid-4.9-5.11.1
SUSE Linux Enterprise Module for Server Applications 15 (src):    squid-4.9-5.11.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 4 Swamp Workflow Management 2019-11-21 17:18:18 UTC

openSUSE-SU-2019:2540-1: An update that fixes 12 vulnerabilities is now available.

Category: security (important)
Bug References: 1133089,1140738,1141329,1141330,1141332,1141442,1156323,1156324,1156326,1156328,1156329
CVE References: CVE-2019-12523,CVE-2019-12525,CVE-2019-12526,CVE-2019-12527,CVE-2019-12529,CVE-2019-12854,CVE-2019-13345,CVE-2019-18676,CVE-2019-18677,CVE-2019-18678,CVE-2019-18679,CVE-2019-3688
Sources used:
openSUSE Leap 15.0 (src):    squid-4.9-lp150.13.1

Comment 5 Swamp Workflow Management 2019-11-21 17:21:20 UTC

openSUSE-SU-2019:2541-1: An update that fixes 12 vulnerabilities is now available.

Category: security (important)
Bug References: 1133089,1140738,1141329,1141330,1141332,1141442,1156323,1156324,1156326,1156328,1156329
CVE References: CVE-2019-12523,CVE-2019-12525,CVE-2019-12526,CVE-2019-12527,CVE-2019-12529,CVE-2019-12854,CVE-2019-13345,CVE-2019-18676,CVE-2019-18677,CVE-2019-18678,CVE-2019-18679,CVE-2019-3688
Sources used:
openSUSE Leap 15.1 (src):    squid-4.9-lp151.2.7.1

Comment 6 Swamp Workflow Management 2019-11-26 14:13:45 UTC

SUSE-SU-2019:3067-1: An update that fixes 7 vulnerabilities is now available.

Category: security (important)
Bug References: 1140738,1156323,1156324,1156326,1156328,1156329
CVE References: CVE-2019-12523,CVE-2019-12526,CVE-2019-13345,CVE-2019-18676,CVE-2019-18677,CVE-2019-18678,CVE-2019-18679
Sources used:
SUSE Linux Enterprise Server 12-SP5 (src):    squid-4.9-4.3.2

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 8 Swamp Workflow Management 2020-03-12 20:20:11 UTC

SUSE-SU-2020:0661-1: An update that fixes 10 vulnerabilities is now available.

Category: security (important)
Bug References: 1156323,1156324,1156326,1156328,1156329,1162687,1162689,1162691
CVE References: CVE-2019-12523,CVE-2019-12526,CVE-2019-12528,CVE-2019-18676,CVE-2019-18677,CVE-2019-18678,CVE-2019-18679,CVE-2020-8449,CVE-2020-8450,CVE-2020-8517
Sources used:
SUSE OpenStack Cloud Crowbar 8 (src):    squid-3.5.21-26.20.1
SUSE OpenStack Cloud 8 (src):    squid-3.5.21-26.20.1
SUSE OpenStack Cloud 7 (src):    squid-3.5.21-26.20.1
SUSE Linux Enterprise Server for SAP 12-SP3 (src):    squid-3.5.21-26.20.1
SUSE Linux Enterprise Server for SAP 12-SP2 (src):    squid-3.5.21-26.20.1
SUSE Linux Enterprise Server 12-SP4 (src):    squid-3.5.21-26.20.1
SUSE Linux Enterprise Server 12-SP3-LTSS (src):    squid-3.5.21-26.20.1
SUSE Linux Enterprise Server 12-SP3-BCL (src):    squid-3.5.21-26.20.1
SUSE Linux Enterprise Server 12-SP2-LTSS (src):    squid-3.5.21-26.20.1
SUSE Linux Enterprise Server 12-SP2-BCL (src):    squid-3.5.21-26.20.1
SUSE Enterprise Storage 5 (src):    squid-3.5.21-26.20.1
HPE Helion Openstack 8 (src):    squid-3.5.21-26.20.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 10 Swamp Workflow Management 2020-08-24 16:14:16 UTC

SUSE-SU-2020:14460-1: An update that fixes 21 vulnerabilities is now available.

Category: security (important)
Bug References: 1140738,1141329,1141332,1156323,1156324,1156326,1156328,1156329,1162687,1162689,1162691,1167373,1169659,1170313,1170423,1173304,1173455
CVE References: CVE-2019-12519,CVE-2019-12520,CVE-2019-12521,CVE-2019-12523,CVE-2019-12524,CVE-2019-12525,CVE-2019-12526,CVE-2019-12528,CVE-2019-12529,CVE-2019-13345,CVE-2019-18676,CVE-2019-18677,CVE-2019-18678,CVE-2019-18679,CVE-2019-18860,CVE-2020-11945,CVE-2020-14059,CVE-2020-15049,CVE-2020-8449,CVE-2020-8450,CVE-2020-8517
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 11-SP4-LTSS (src):    squid3-3.1.23-8.16.37.12.1
SUSE Linux Enterprise Point of Sale 11-SP3 (src):    squid3-3.1.23-8.16.37.12.1
SUSE Linux Enterprise Debuginfo 11-SP4 (src):    squid3-3.1.23-8.16.37.12.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.

Comment 12 Swamp Workflow Management 2022-03-14 17:20:50 UTC

SUSE-SU-2022:14908-1: An update that fixes three vulnerabilities is now available.

Category: security (important)
Bug References: 1156329,1175664
CVE References: CVE-2019-12523,CVE-2019-18676,CVE-2020-15810
JIRA References: 
Sources used:
SUSE Linux Enterprise Server 11-SP4-LTSS (src):    squid-2.7.STABLE5-2.12.30.6.1
SUSE Linux Enterprise Point of Sale 11-SP3 (src):    squid-2.7.STABLE5-2.12.30.6.1
SUSE Linux Enterprise Debuginfo 11-SP4 (src):    squid-2.7.STABLE5-2.12.30.6.1
SUSE Linux Enterprise Debuginfo 11-SP3 (src):    squid-2.7.STABLE5-2.12.30.6.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.