Bug 851295 (CVE-2013-4547) - VUL-0: CVE-2013-4547: nginx: security restriction bypass flaw due to whitespace parsing
Summary: VUL-0: CVE-2013-4547: nginx: security restriction bypass flaw due to whitespa...
Status: RESOLVED FIXED
Alias: CVE-2013-4547
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Major
Target Milestone: ---
Deadline: 2013-11-27
Assignee: Security Team bot
QA Contact: Security Team bot
URL:
Whiteboard: maint:released:sle11-sp2:55191
Keywords:
Depends on:
Blocks:
 
Reported: 2013-11-20 10:04 UTC by Victor Pereira
Modified: 2013-12-17 09:19 UTC (History)
3 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description Victor Pereira 2013-11-20 10:04:07 UTC 
CVE-2013-4547

It was reported [1] that nginx suffered from a flaw where an attacker could bypass security restrictions in certain configurations due to how the HTTP request parser handled URI's with an unescaped space character.

This problem affects nginx 0.8.41 through to 1.5.6; new 1.5.7 and 1.4.4 releases are available to correct this.  A patch [2] also exists for older versions.

As a temporary workaround the following configuration can be used in each server{} block:

    if ($request_uri ~ " ") {
        return 444;
    } 


References:
[1] http://mailman.nginx.org/pipermail/nginx-announce/2013/000125.html
[2] http://nginx.org/download/patch.2013.space.txt
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-4547
https://bugzilla.redhat.com/show_bug.cgi?id=1032266
Comment 1 Swamp Workflow Management 2013-11-20 10:06:12 UTC 
The SWAMPID for this issue is 55182.
This issue was rated as important.
Please submit fixed packages until 2013-11-27.
When done, please reassign the bug to security-team@suse.de.
Patchinfo will be handled by security team.
Comment 2 Cristian Rodríguez 2013-11-20 16:06:06 UTC 
Ok, I have fixed all supported openSUSE releases.
Comment 3 Swamp Workflow Management 2013-11-20 23:00:09 UTC 
bugbot adjusting priority
Comment 4 Swamp Workflow Management 2013-11-22 04:05:17 UTC 
openSUSE-SU-2013:1745-1: An update that fixes one vulnerability is now available.

Category: security (moderate)
Bug References: 851295
CVE References: CVE-2013-4547
Sources used:
openSUSE 13.1 (src):    nginx-1.4.4-3.5.1
openSUSE 12.3 (src):    nginx-1.2.9-3.8.1
Comment 5 Swamp Workflow Management 2013-11-30 10:04:23 UTC 
openSUSE-SU-2013:1791-1: An update that fixes one vulnerability is now available.

Category: security (moderate)
Bug References: 851295
CVE References: CVE-2013-4547
Sources used:
openSUSE 12.2 (src):    nginx-1.0-1.0.15-3.4.1
Comment 6 Swamp Workflow Management 2013-11-30 11:04:52 UTC 
openSUSE-SU-2013:1792-1: An update that fixes one vulnerability is now available.

Category: security (moderate)
Bug References: 851295
CVE References: CVE-2013-4547
Sources used:
openSUSE 11.4 (src):    nginx-0.8-0.8.53-4.17.2
Comment 7 Stefan Schubert 2013-12-02 09:35:12 UTC 
sr sent:
nginx-1.0: created request id 29733
nginx-0.8: created request id 29734

Hope, that would be enough :-)
Comment 8 Stefan Schubert 2013-12-02 09:36:37 UTC 
This fixes for:
SUSE:SLE-11-SP2:Update:Test 
SUSE:SLE-11-SP1:Update:ATK:1.2:Update:Test
back to security team...
Comment 9 Ruediger Oertel 2013-12-02 10:33:22 UTC 
nginx-0.8 was not used for atk-1.2, nginx-1.0 (version 1.0.0) was used,
created sr 29738
Comment 10 Sebastian Krahmer 2013-12-16 11:50:49 UTC 
released
Comment 11 Swamp Workflow Management 2013-12-16 16:49:39 UTC 
Update released for: nginx-1.0, nginx-1.0-debuginfo, nginx-1.0-debugsource
Products:
SLE-SLMS 1.3 (x86_64)
SLE-STUDIOONSITE 1.3 (x86_64)
SLE-WEBYAST 1.3 (i386, ia64, ppc64, s390x, x86_64)