| Name | CVE-2020-6581 |
| Description | Nagios NRPE 3.2.1 has Insufficient Filtering because, for example, nasty_metachars interprets \n as the character \ and the character n (not as the \n newline sequence). This can cause command injection. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| nagios-nrpe (PTS) | buster | 3.2.1-2 | vulnerable |
| bullseye | 4.0.3-1 | fixed |
| sid, trixie, bookworm | 4.1.0-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| nagios-nrpe | source | jessie | (not affected) | | | |
| nagios-nrpe | source | (unstable) | 4.0.0-1 | | | |
Notes
[buster] - nagios-nrpe <no-dsa> (Minor issue)
[stretch] - nagios-nrpe <no-dsa> (Minor issue)
[jessie] - nagios-nrpe <not-affected> (Vulnerable code introduced later)
https://herolab.usd.de/security-advisories/usd-2020-0002/
https://github.com/NagiosEnterprises/nrpe/commit/0db345444d0dcb3e37cca1bcbb0027dcbb764197 (part for proper processing of nasty_metachars)