nginx 1.6.2-5 on Debian/Ubuntu Log File /var/log/nginx link following

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in nginx 1.6.2-5 on Debian/Ubuntu. Impacted is an unknown function of the file /var/log/nginx of the component Log File Handler. This manipulation causes link following. The identification of this vulnerability is CVE-2016-1247. The attack can only be executed locally. Furthermore, there is an exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in nginx 1.6.2-5 on Debian/Ubuntu (Web Server) and classified as critical. Affected by this vulnerability is some unknown functionality of the file /var/log/nginx of the component Log File Handler. The manipulation with an unknown input leads to a link following vulnerability. The CWE definition for the vulnerability is CWE-59. The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 10/25/2016. The weakness was shared 10/25/2016 by Dawid Golunski as [SECURITY] [DSA 3701-1] nginx security update as confirmed mailinglist post (Bugtraq). The advisory is shared at seclists.org. The vendor cooperated in the coordination of the public release. This vulnerability is known as CVE-2016-1247 since 12/27/2015. The exploitation appears to be easy. An attack has to be approached locally. A single authentication is required for exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 94260 (Debian DSA-3701-1 : nginx - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175866 (Debian Security Update for nginx (DSA 3701-1)).

Upgrading to version 1.6.2-5+deb8u3 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (40768), Tenable (94260) and SecurityFocus (BID 93903†). Additional details are provided at seclists.org. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Link following
CWE: CWE-59
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 94260
Nessus Name: Debian DSA-3701-1 : nginx - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703701
OpenVAS Name: Debian Security Advisory DSA 3701-1 (nginx - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: nginx 1.6.2-5+deb8u3

Timelineinfo

12/27/2015 🔍
10/25/2016 +303 days 🔍
10/25/2016 +0 days 🔍
10/25/2016 +0 days 🔍
10/25/2016 +0 days 🔍
10/26/2016 +1 days 🔍
10/26/2016 +0 days 🔍
11/29/2016 +34 days 🔍
10/16/2024 +2878 days 🔍

Sourcesinfo

Advisory: [SECURITY] [DSA 3701-1] nginx security update
Researcher: Dawid Golunski
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2016-1247 (🔍)
GCVE (CVE): GCVE-0-2016-1247
GCVE (VulDB): GCVE-100-93109

OVAL: 🔍

SecurityFocus: 93903 - Nginx CVE-2016-1247 Remote Privilege Escalation Vulnerability
SecurityTracker: 1037104

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

Entryinfo

Created: 10/26/2016 21:22
Updated: 10/16/2024 05:21
Changes: 10/26/2016 21:22 (81), 07/17/2019 18:19 (7), 09/28/2022 14:36 (4), 10/16/2024 05:21 (16)
Complete: 🔍
Cache ID: 216::103

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