Improper Neutralization of Special Elements in Output Used by a Downstream Component in nrpe - CVE-2020-6581
Published: March 16, 2020 / Updated: December 11, 2020
Vulnerability identifier: #VU48930
CSH Severity: High
CVSS v4: 8.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-6581
CWE-ID: CWE-74
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote authenticated user to execute arbitrary code.
Nagios NRPE 3.2.1 has Insufficient Filtering because, for example, nasty_metachars interprets as the character and the character n (not as the newline sequence). This can cause command injection.
Affected software
nrpe
nrpe (Alpine package)
nrpe
Fedora
nrpe (Alpine package)
nrpe
Fedora
How to mitigate CVE-2020-6581
Install update from vendor's website.
nrpe - addressed in versions 4.0.2-1.el6, 4.0.2-1.el7, 4.0.2-2.el8, 4.0.2-2.fc32
External References
Related Security Bulletins
- Improper Neutralization of Special Elements in Output Used by a Downstream Component in www.nagios nrpe
- Improper Neutralization of Special Elements in Output Used by a Downstream Component in nrpe (Alpine package)
- Fedora 32 update for nrpe
- Fedora EPEL 8 update for nrpe
- Fedora EPEL 7 update for nrpe
- Fedora EPEL 6 update for nrpe