vulnerability
Ubuntu: (Multiple Advisories) (CVE-2019-18634): Sudo vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:N/C:P/I:P/A:P) | Jan 29, 2020 | Feb 4, 2020 | Apr 16, 2026 |
Severity
5
CVSS
(AV:L/AC:L/Au:N/C:P/I:P/A:P)
Published
Jan 29, 2020
Added
Feb 4, 2020
Modified
Apr 16, 2026
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.
Solutions
ubuntu-pro-upgrade-sudoubuntu-pro-upgrade-sudo-ldapubuntu-upgrade-sudoubuntu-upgrade-sudo-ldap
Rapid7 Labs
2026 Global Threat Landscape Report
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