Rapid7 Vulnerability & Exploit Database

Red Hat OpenShift: CVE-2019-18634: sudo: Stack based buffer overflow when pwfeedback is enabled

Back to Search

Red Hat OpenShift: CVE-2019-18634: sudo: Stack based buffer overflow when pwfeedback is enabled

Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
01/29/2020
Created
12/30/2020
Added
12/29/2020
Modified
12/29/2020

Description

In Sudo before 1.8.26, if pwfeedback is enabled in /etc/sudoers, users can trigger a stack-based buffer overflow in the privileged sudo process. (pwfeedback is a default setting in Linux Mint and elementary OS; however, it is NOT the default for upstream and many other packages, and would exist only if enabled by an administrator.) The attacker needs to deliver a long string to the stdin of getln() in tgetpass.c.

Solution(s)

  • linuxrpm-upgrade-redhat-coreos

With Rapid7 live dashboards, I have a clear view of all the assets on my network, which ones can be exploited, and what I need to do in order to reduce the risk in my environment in real-time. No other tool gives us that kind of value and insight.

– Scott Cheney, Manager of Information Security, Sierra View Medical Center

;