Out-of-bounds write in nrpe - CVE-2020-6582
Published: March 16, 2020 / Updated: December 11, 2020
Vulnerability identifier: #VU48931
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-6582
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Nagios NRPE 3.2.1 has a Heap-Based Buffer Overflow, as demonstrated by interpretation of a small negative number as a large positive number during a bzero call.
Affected software
nrpe
nrpe (Alpine package)
nrpe
Fedora
nrpe (Alpine package)
nrpe
Fedora
How to mitigate CVE-2020-6582
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