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2 vulnerabilities by monitoring-plugins
CVE-2026-63418 (GCVE-0-2026-63418)
Vulnerability from nvd – Published: 2026-11-03 18:06 – Updated: 2026-11-03 22:40
VLAI
EPSS
VEX
Title
Monitoring Plugins check_icmp: -H argument count overflow leads in setuid-root binary
Summary
Monitoring Plugins is a suite of plugins for monitoring applications. From 3.0.0-rc1 until 3.0.1, check_icmp stores the number of hosts supplied through -H or --Host on the command line, or through --extra-opts files containing Host= entries, in an unsigned short. More than 65,535 hosts wrap the counter, causing process_arguments() to allocate an undersized hosts array and then write subsequent entries out of bounds before main() calls setuid(getuid()). On installations where check_icmp is setuid root, a local low-privileged attacker can corrupt heap memory while the process still has root privileges; reliable privilege escalation has not been demonstrated. Installations that use cap_net_raw file capabilities instead of setuid are not exposed to the privilege-escalation consequence. This issue is fixed in version 3.0.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 22:36 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/monitoring-plugins/monitoring-… | x_refsource_CONFIRM |
| https://github.com/monitoring-plugins/monitoring-… | x_refsource_MISC |
| https://github.com/monitoring-plugins/monitoring-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| monitoring-plugins | monitoring-plugins |
Affected:
>= 3.0.0-rc1, < 3.0.1
|
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CVE-2026-63418 (GCVE-0-2026-63418)
Vulnerability from cvelistv5 – Published: 2026-11-03 18:06 – Updated: 2026-11-03 22:40
VLAI
EPSS
VEX
Title
Monitoring Plugins check_icmp: -H argument count overflow leads in setuid-root binary
Summary
Monitoring Plugins is a suite of plugins for monitoring applications. From 3.0.0-rc1 until 3.0.1, check_icmp stores the number of hosts supplied through -H or --Host on the command line, or through --extra-opts files containing Host= entries, in an unsigned short. More than 65,535 hosts wrap the counter, causing process_arguments() to allocate an undersized hosts array and then write subsequent entries out of bounds before main() calls setuid(getuid()). On installations where check_icmp is setuid root, a local low-privileged attacker can corrupt heap memory while the process still has root privileges; reliable privilege escalation has not been demonstrated. Installations that use cap_net_raw file capabilities instead of setuid are not exposed to the privilege-escalation consequence. This issue is fixed in version 3.0.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-11-03 22:36 UTC
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/monitoring-plugins/monitoring-… | x_refsource_CONFIRM |
| https://github.com/monitoring-plugins/monitoring-… | x_refsource_MISC |
| https://github.com/monitoring-plugins/monitoring-… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| monitoring-plugins | monitoring-plugins |
Affected:
>= 3.0.0-rc1, < 3.0.1
|
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