Description
Todd Miller's sudo version 1.8.20p1 and earlier is vulnerable to an input validation (embedded newlines) in the get_process_ttyname() function resulting in information disclosure and command execution.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | sudo | 1.8.20p1-1.1 | — |
| Debian 13 | sudo | 1.8.20p1-1.1 | — |
| Debian 12 | sudo | 1.8.20p1-1.1 | — |
| Debian 7 | sudo | 1.8.5p2-1+nmu3+deb7u4 | DLA-1011-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | sudo | 1.8.20p2-1ubuntu1 | — |
| Ubuntu 16.04 LTS | sudo | 1.8.16-0ubuntu1.6 | USN-3968-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 14.04 LTS | sudo | 1.8.9p5-1ubuntu1.5+esm1 | USN-3968-2 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | sudo +1 | 1.8.6p7-23.el7_3 | RHSA-2017:1574 |
| RHEL 6 | sudo +1 | 1.8.6p3-29.el6_9 | RHSA-2017:1574 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 5 ELS | sudo | 1.7.2p1-31.el5_11 | RHSA-2017:1574 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | sudo | 1.8.10p3-10.10.2 | SUSE-SU-2017:1771-1, SUSE-SU-2017:1626-1 |
| SLES 12 SP1 | sudo | 1.8.10p3-2.16.1 | SUSE-SU-2017:1778-1, SUSE-SU-2017:1627-1 |
| SLES 12 | sudo | 1.8.10p3-2.16.1 | SUSE-SU-2017:1778-1, SUSE-SU-2017:1627-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | sudo | 1.8.10p3-10.10.2 | SUSE-SU-2017:1771-1, SUSE-SU-2017:1626-1 |
| SLES for SAP 12 SP1 | sudo | 1.8.10p3-2.16.1 | SUSE-SU-2017:1778-1, SUSE-SU-2017:1627-1 |
| SLES for SAP 12 | sudo | 1.8.10p3-2.16.1 | SUSE-SU-2017:1778-1, SUSE-SU-2017:1627-1 |
| SUSE OpenStack Cloud 6 | sudo | 1.8.10p3-2.16.1 | SUSE-SU-2017:1778-1, SUSE-SU-2017:1627-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | sudo | 1.9.7p2-1.4 | openSUSE-SU-2024:11413-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.23 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.22 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.21 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.20 | sudo | 1.8.20_p2-r0 | — |
Show 13 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.19 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.18 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.17 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.16 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.15 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.14 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.13 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.12 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.11 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.10 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.9 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.8 | sudo | 1.8.20_p2-r0 | — |
| Alpine v3.7 | sudo | 1.8.20_p2-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | sudo +1 | 1.8.23-4.amzn2.0.1 | ALAS2-2019-1315 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | sudo +1 | 1.8.6p7-23.el7_3 | ELSA-2017-1574 |
Advisories 11
- RHSA-2017:1574 Red Hat Security Advisory: sudo security update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DLA-1011-1 sudo - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3968-1 sudo vulnerabilities Ubuntu Security Notices (USN) · Feb 10, 2026
- USN-3968-2 sudo vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- SUSE-SU-2017:1778-1 Security update for sudo SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1626-1 Security update for sudo SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1627-1 Security update for sudo SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11413-1 sudo-1.9.7p2-1.4 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1771-1 Security update for sudo SUSE / openSUSE Security Updates · Feb 4, 2026
- ALAS2-2019-1315 Important: sudo security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 14, 2019
- ELSA-2017-1574 Moderate: sudo security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Jun 23, 2017
References
- https://www.sudo.ws/alerts/linux_tty.html
- GLSA-201710-04 vendor-advisory
- 98838 vdb-entry
- RHSA-2017:1574 vendor-advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10205
- USN-3968-1 vendor-advisory
- USN-3968-2 vendor-advisory