Description
check_by_ssh in Nagios nagios-plugins 2.4.5 allows arbitrary command execution via ProxyCommand, LocalCommand, and PermitLocalCommand with \${IFS}. This has been categorized both as fixed in e8810de, and as intended behavior.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | monitoring-plugins | No fix yet | — |
| Debian 13 | monitoring-plugins | No fix yet | — |
| Debian 12 | monitoring-plugins | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | monitoring-plugins | No fix yet | — |
| Ubuntu 26.04 LTS | monitoring-plugins | No fix yet | — |
| Ubuntu 25.10 | monitoring-plugins | No fix yet | — |
| Ubuntu 24.04 LTS | monitoring-plugins | No fix yet | — |
| Ubuntu 22.04 LTS | monitoring-plugins | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | monitoring-plugins | No fix yet | — |
| Ubuntu 18.04 LTS | monitoring-plugins | No fix yet | — |
| Ubuntu 16.04 LTS | monitoring-plugins | No fix yet | — |