Nagios XI < 2011R1.9 Race Conditions in Crontab Install Scripts LPE
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Nagios | XI | before 2011R1.9 | 2011R1.9 | Patch available | CNA |
- XI VendorNagios Affected before 2011R1.9 Fixed in 2011R1.9 Patch available CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:* | up to 2009 | Vulnerable | Nagios |
| cpe:2.3:a:nagios:nagios_xi:2011:r1:*:*:*:*:*:* | 2011 r1 | Vulnerable | Nagios |
| cpe:2.3:a:nagios:nagios_xi:2011:r1.1:*:*:*:*:*:* | 2011 r1.1 | Vulnerable | Nagios |
| cpe:2.3:a:nagios:nagios_xi:2011:r1.2:*:*:*:*:*:* | 2011 r1.2 | Vulnerable | Nagios |
| cpe:2.3:a:nagios:nagios_xi:2011:r1.3:*:*:*:*:*:* | 2011 r1.3 | Vulnerable | Nagios |
| cpe:2.3:a:nagios:nagios_xi:2011:r1.4:*:*:*:*:*:* | 2011 r1.4 | Vulnerable | Nagios |
| cpe:2.3:a:nagios:nagios_xi:2011:r1.5:*:*:*:*:*:* | 2011 r1.5 | Vulnerable | Nagios |
| cpe:2.3:a:nagios:nagios_xi:2011:r1.6:*:*:*:*:*:* | 2011 r1.6 | Vulnerable | Nagios |
| cpe:2.3:a:nagios:nagios_xi:2011:r1.7:*:*:*:*:*:* | 2011 r1.7 | Vulnerable | Nagios |
| cpe:2.3:a:nagios:nagios_xi:2011:r1.8:*:*:*:*:*:* | 2011 r1.8 | Vulnerable | Nagios |
- cpe:2.3:a:nagios:nagios_xi:*:*:*:*:*:*:*:* Versions up to 2009 Vulnerable ·Nagios
- cpe:2.3:a:nagios:nagios_xi:2011:r1:*:*:*:*:*:* Versions 2011 r1 Vulnerable ·Nagios
- cpe:2.3:a:nagios:nagios_xi:2011:r1.1:*:*:*:*:*:* Versions 2011 r1.1 Vulnerable ·Nagios
- cpe:2.3:a:nagios:nagios_xi:2011:r1.2:*:*:*:*:*:* Versions 2011 r1.2 Vulnerable ·Nagios
- cpe:2.3:a:nagios:nagios_xi:2011:r1.3:*:*:*:*:*:* Versions 2011 r1.3 Vulnerable ·Nagios
- cpe:2.3:a:nagios:nagios_xi:2011:r1.4:*:*:*:*:*:* Versions 2011 r1.4 Vulnerable ·Nagios
- cpe:2.3:a:nagios:nagios_xi:2011:r1.5:*:*:*:*:*:* Versions 2011 r1.5 Vulnerable ·Nagios
- cpe:2.3:a:nagios:nagios_xi:2011:r1.6:*:*:*:*:*:* Versions 2011 r1.6 Vulnerable ·Nagios
- cpe:2.3:a:nagios:nagios_xi:2011:r1.7:*:*:*:*:*:* Versions 2011 r1.7 Vulnerable ·Nagios
- cpe:2.3:a:nagios:nagios_xi:2011:r1.8:*:*:*:*:*:* Versions 2011 r1.8 Vulnerable ·Nagios
Remediation
- Fix · CNA XI (Nagios) Fixed in 2011R1.9
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Nagios XI 2011R1.9
6 records Highest priority Priority MEDIUM 1 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2011-04639 Nagios XI < 2011R1.9 XSS via xiwindow Variables Affecting PermalinksPriority MEDIUM 56
- TI-2011-04642 Nagios XI < 2011R1.9 XSS via Status/Report Page Link FunctionsPriority LOW 24
- TI-2011-04641 Nagios XI < 2011R1.9 XSS via Alert Heatmap Report & “My Reports” ListingPriority LOW 24
Timeline
- 2026-10-02 Threatist record created from CVE-2011-10035
- 2026-10-03 Alias added: GHSA-rmp9-wcq5-wff8
References
More Nagios Xi vulnerabilities
- TI-2021-07545 Nagios XI version xi-5.7.5 is affected by OS command injection. KEVCVSS 3.1HIGH 8.8
- TI-2021-07544 Nagios XI version xi-5.7.5 is affected by OS command injection. KEVCVSS 3.1HIGH 8.8
- TI-2021-07543 Nagios XI version xi-5.7.5 is affected by OS command injection. KEVCVSS 3.1HIGH 8.8
- TI-2019-11993 Nagios XI before 5.6.6 allows remote command execution as root. KEVCVSS 3.1HIGH 8.8
- TI-2023-26027 Nagios XI before version 5.11.3 was discovered to contain a remote code execution (RCE)… CVSS 3.1CRITICAL 9.8
- TI-2018-11196 Snoopy 1.0 in Nagios XI 5.5.6 allows remote unauthenticated attackers to execute… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2011-10035 · CVE Program
- CVE-2011-10035 · NVD
- FIRST EPSS
- GHSA-rmp9-wcq5-wff8 · GitHub Advisory Database · CC BY 4.0
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