Novell openSUSE 11.4/12.3/13.1 nrpe.c incomplete blacklist

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

A vulnerability classified as critical was found in Novell openSUSE 11.4/12.3/13.1 (Operating System). This vulnerability affects an unknown code of the file nrpe.c. The manipulation with an unknown input leads to a incomplete blacklist vulnerability. The CWE definition for the vulnerability is CWE-184. The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete, leading to resultant weaknesses. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

** DISPUTED ** Incomplete blacklist vulnerability in nrpe.c in Nagios Remote Plugin Executor (NRPE) 2.15 and earlier allows remote attackers to execute arbitrary commands via a newline character in the -a option to libexec/check_nrpe. NOTE: this issue is disputed by multiple parties. It has been reported that the vendor allows newlines as "expected behavior." Also, this issue can only occur when the administrator enables the "dont_blame_nrpe" option in nrpe.conf despite the "HIGH security risk" warning within the comments.

The weakness was presented 05/07/2014 by Dawid Golunski as not defined mailinglist post (oss-sec). The advisory is available at seclists.org. This vulnerability was named CVE-2014-2913 since 04/18/2014. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known. This vulnerability is assigned to T1562.006 by the MITRE ATT&CK project.

A public exploit has been developed in Python. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $5k-$25k. The real existence of this vulnerability is still doubted at the moment. The vulnerability scanner Nessus provides a plugin with the ID 73757 (Nagios NRPE Command Argument Processing Enabled), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370704 (Nagios Remote Plugin Executor Remote Command Execution Vulnerability.).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (73757) and Exploit-DB (34461).

Productinfo

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Support

  • end of life

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.9

VulDB Base Score: 7.3
VulDB Temp Score: 6.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Incomplete blacklist
CWE: CWE-184 / CWE-183 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

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

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Nessus ID: 73757
Nessus Name: Nagios NRPE Command Argument Processing Enabled
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 64843
OpenVAS Name: Amazon Linux Local Check: ALAS-2014-364
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/17/2014 🔍
04/18/2014 +1 days 🔍
04/29/2014 +11 days 🔍
05/07/2014 +8 days 🔍
05/07/2014 +0 days 🔍
03/25/2015 +322 days 🔍
05/02/2019 +1499 days 🔍

Sourcesinfo

Vendor: novell.com

Advisory: seclists.org
Researcher: Dawid Golunski
Status: Not defined
Disputed: 🔍

CVE: CVE-2014-2913 (🔍)
OVAL: 🔍

SecurityFocus: 66969 - Nagios Remote Plugin Executor 'nrpe.c' Remote Code Execution Vulnerability

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

Entryinfo

Created: 03/25/2015 16:45
Updated: 05/02/2019 12:32
Changes: 03/25/2015 16:45 (65), 05/02/2019 12:32 (9)
Complete: 🔍

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