nginx up to 1.5.6 URI String access control

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in nginx up to 1.5.6. The affected element is an unknown function of the component URI String. The manipulation leads to access control. This vulnerability is uniquely identified as CVE-2013-4547. Moreover, an exploit is present. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in nginx up to 1.5.6 (Web Server) and classified as critical. This issue affects some unknown functionality of the component URI String. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, and integrity. The summary by CVE is:

nginx 0.8.41 through 1.4.3 and 1.5.x before 1.5.7 allows remote attackers to bypass intended restrictions via an unescaped space character in a URI.

The issue has been introduced in 06/15/2010. The weakness was disclosed 11/19/2013 by Ivan Fratric with Google Security Team as [nginx-announce] nginx security advisory as confirmed advisory (Website). The advisory is shared at mailman.nginx.org. The public release has been coordinated in cooperation with the project team. The identification of this vulnerability is CVE-2013-4547 since 06/12/2013. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1253 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 75218 (openSUSE Security Update : nginx-1.0 (openSUSE-SU-2013:1791-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350777 (Amazon Linux Security Advisory for nginx: AL2012-2015-054).

Upgrading to version 1.4.4 or higher or 1.5.7 or higher eliminates this vulnerability. The upgrade is hosted for download at nginx.org. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 13504.

The vulnerability is also documented in the databases at X-Force (89099), Exploit-DB (38846), Tenable (75218), SecurityFocus (BID 63814†) and OSVDB (100015†). lists.debian.org is providing further details. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 75218
Nessus Name: openSUSE Security Update : nginx-1.0 (openSUSE-SU-2013:1791-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892802
OpenVAS Name: Debian Security Advisory DSA 2802-1 (nginx - restriction bypass
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: nginx 1.4.4 or higher/1.5.7 or higher
TippingPoint: 🔍
ISS Proventia IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

06/15/2010 🔍
06/12/2013 +1093 days 🔍
11/19/2013 +159 days 🔍
11/19/2013 +0 days 🔍
11/19/2013 +0 days 🔍
11/19/2013 +0 days 🔍
11/23/2013 +4 days 🔍
11/25/2013 +2 days 🔍
11/27/2013 +2 days 🔍
06/13/2014 +198 days 🔍
12/25/2024 +3848 days 🔍

Sourcesinfo

Advisory: [nginx-announce] nginx security advisory
Researcher: Ivan Fratric
Organization: Google Security Team
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2013-4547 (🔍)
GCVE (CVE): GCVE-0-2013-4547
GCVE (VulDB): GCVE-100-11237

OVAL: 🔍

X-Force: 89099
SecurityFocus: 63814
Secunia: 55757 - nginx Request URI Verification Security Bypass Security Issue, Moderately Critical
OSVDB: 100015
Vulnerability Center: 42385 - nginx 0.8.41 Though 1.4.3 and 1.5.0 Through 1.5.6 Remote Security Bypass due to Handling of an Unescaped Space in a URI, High

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 11/25/2013 09:01
Updated: 12/25/2024 15:05
Changes: 11/25/2013 09:01 (85), 05/15/2017 12:08 (1), 06/02/2021 12:38 (4), 06/02/2021 12:46 (1), 12/24/2024 01:39 (23), 12/25/2024 15:05 (2)
Complete: 🔍
Committer:
Cache ID: 216:838:103

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