CVE-2019-18634
HIGH 7.8EPSS 19.4%
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.
- CVSS v3.1
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v2.0
- 4.6 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P - EPSS
- 19.43% chance of exploitation in the next 30 days, 97th percentile
- Published
- 2020-01-29
- Updated
- 2024-08-05
Proof-of-concept exploits (15)
- DDayLuong/CVE-2019-186340★ · 2023-12-27
- N1et/CVE-2019-186342★ · 2021-08-11
- Plazmaz/CVE-2019-1863459★ · 2020-02-19
- TheJoyOfHacking/saleemrashid-sudo-cve-2019-186340★ · 2022-03-20
- aesophor/CVE-2019-186345★ · 2021-08-14
- chanbakjsd/CVE-2019-186343★ · 2024-04-14
- edsonjt81/sudo-cve-2019-186340★ · 2021-04-25
- l0w3/CVE-2019-186340★ · 2024-12-13
- lockedbyte/CVE-Exploits689★ · 2021-08-21
- ngyinkit/cve-2019-186340★ · 2025-04-12
- paras1te-x/CVE-2019-186340★ · 2021-05-05
- ptef/CVE-2019-186341★ · 2022-11-07
- saleemrashid/sudo-cve-2019-18634237★ · 2021-09-12
- dukptkey/CVE-2019-18634
- letsr00t/-CVE-2019-18634-sudo-pwfeedback