VDB-330669 · CVE-2011-10035 · GCVE-0-2011-10035

Nagios XI up to 2011R1.8 crontab toctou

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.6	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Nagios XI up to 2011R1.8 and classified as problematic. This impacts an unknown function of the component crontab. Performing a manipulation results in toctou. This vulnerability is cataloged as CVE-2011-10035. The attack must be initiated from a local position. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Nagios XI up to 2011R1.8. This affects an unknown part of the component crontab. The manipulation with an unknown input leads to a toctou vulnerability. CWE is classifying the issue as CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Nagios XI versions prior to 2011R1.9 contain privilege escalation vulnerabilities in the scripts that install or update system crontab entries. Due to time-of-check/time-of-use race conditions and missing synchronization or final-path validation, a local low-privileged user could manipulate filesystem state during crontab installation to influence the files or commands executed with elevated privileges, resulting in execution with higher privileges.

The weakness was shared by 0a29406d9794e4f9b30b3c5d6702c708. The advisory is shared at nagios.com. This vulnerability is uniquely identified as CVE-2011-10035 since 10/28/2025. The exploitability is told to be difficult. An attack has to be approached locally. Neither technical details nor an exploit are publicly available.

Upgrading to version 2011R1.9 eliminates this vulnerability. The upgrade is hosted for download at nagios.com.

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Productinfo

Type

Log Management Software

Vendor

Nagios

Name

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 4.5
VulDB Temp Score: 4.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Toctou
CWE: CWE-367 / CWE-362
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: XI 2011R1.9

Timelineinfo

10/28/2025 CVE reserved
10/31/2025 +3 days Advisory disclosed
10/31/2025 +0 days VulDB entry created
11/07/2025 +7 days VulDB entry last update

Sourcesinfo

Advisory: nagios.com
Researcher: 0a29406d9794e4f9b30b3c5d6702c708
Status: Confirmed

CVE: CVE-2011-10035 (🔒)
GCVE (CVE): GCVE-0-2011-10035
GCVE (VulDB): GCVE-100-330669

Entryinfo

Created: 10/31/2025 07:46
Updated: 11/07/2025 23:42
Changes: 10/31/2025 07:46 (69), 11/07/2025 23:42 (11)
Complete: 🔍
Cache ID: 216::103