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Nagios CVE-2013-1362

HIGH
Improper Input Validation (CWE-20)
2013-07-09 cve@mitre.org
Information Disclosure Nagios Opensuse Remote Plug In Executor
7.5
CVSS 2.0 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-20
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Impact

CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity. Public proof-of-concept exploit code is available. EPSS exploitation probability: 76.44%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.
Act Now Prioritize within 24-48h. Why: HIGH severity + EPSS > 10%.
No patch listed yet 76.4% exploitation probability (EPSS)

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AnalysisAI

Incomplete blacklist vulnerability in nrpc.c in Nagios Remote Plug-In Executor (NRPE) before 2.14 might allow remote attackers to execute arbitrary shell commands via "$()" shell metacharacters,. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and EPSS exploitation probability 76.4%.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-20. Incomplete blacklist vulnerability in nrpc.c in Nagios Remote Plug-In Executor (NRPE) before 2.14 might allow remote attackers to execute arbitrary shell commands via "$()" shell metacharacters, which are processed by bash. Affected products include: Opensuse, Nagios Remote Plug In Executor. Version information: before 2.14.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Confidentiality
P
Integrity
P
Availability
P

DescriptionCVE.org

Incomplete blacklist vulnerability in nrpc.c in Nagios Remote Plug-In Executor (NRPE) before 2.14 might allow remote attackers to execute arbitrary shell commands via "$()" shell metacharacters, which are processed by bash.

Threat Intelligence Overview

Threat Score
5.3/10
Composite threat intelligence
EPSS Score
76.4%
Top 1% exploitable
Exploit
POC
Public exploit code exists
Data Quality
5 sources
Confidence: Medium
NVD CVE.org EPSS POC (1) Exploit-DB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 76.4%
Patch available No
Active threat Yes
Deciding rule
HIGH severity + EPSS > 10%
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
Active
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
High

Priority Score

149
Low Medium High Critical
KEV: 0
EPSS: +76
CVSS: +38
PoC: +20
Weaponized: +15
Threat intel: 0
Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Affected Products (CPE)CVE.org

cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:12.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:12.2:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:*:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:1.3:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:1.4:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:1.5:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:1.6:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:1.7:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:1.8:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:1.9:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:2.0:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:2.0b1:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:2.0b2:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:2.0b3:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:2.0b4:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:2.0b5:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:2.3:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:2.4:*:*:*:*:*:*:*
cpe:2.3:a:nagios:remote_plug_in_executor:2.5:*:*:*:*:*:*:*
+ 12 more

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References

Advisories & patches
REF http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00005.html REF http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00006.html REF http://seclists.org/bugtraq/2013/Feb/119 REF http://www.occamsec.com/vulnerabilities.html#nagios_metacharacter_vulnerability REF https://bugzilla.novell.com/show_bug.cgi?id=807241

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