CVE-2019-18634
published 2020-01-29CVE-2019-18634: 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…
high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EXPLOIT
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
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | debian_linux | — | — |
| debian | sudo | < sudo 1.8.31-1 (bookworm) | sudo 1.8.31-1 (bookworm) |
| sudo_project | sudo | >= 0 < 1.8.31-1 | 1.8.31-1 |
| sudo_project | sudo | >= 0 < 1.8.31-1 | 1.8.31-1 |
| sudo_project | sudo | >= 0 < 1.8.31-1 | 1.8.31-1 |
| sudo_project | sudo | >= 0 < 1.8.31-1 | 1.8.31-1 |
| sudo_project | sudo | >= 1.7.1 < 1.8.26 | 1.8.26 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH