CVE-2019-18634
HIGH7.8EPSS 88.0%sudo - security update
Published: 1/29/2020Modified: 4/28/2026
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.
Affected packages (4)
- Alpine/sudofrom 0, < 1.8.27-r2
- Debian/sudofrom 0, < 1.8.31-1
- Debian/sudofrom 0, < 1.8.10p3-1+deb8u7
- Debian/sudofrom 0, < 1.8.19p1-2.1+deb9u2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |