CVE-2019-19232

Published: 19 December 2019

** DISPUTED ** In Sudo through 1.8.29, an attacker with access to a Runas ALL sudoer account can impersonate a nonexistent user by invoking sudo with a numeric uid that is not associated with any user. NOTE: The software maintainer believes that this is not a vulnerability because running a command via sudo as a user not present in the local password database is an intentional feature. Because this behavior surprised some users, sudo 1.8.30 introduced an option to enable/disable this behavior with the default being disabled. However, this does not change the fact that sudo was behaving as intended, and as documented, in earlier versions.

Priority

Low

CVSS 3 base score: 7.5

Status

Package Release Status
sudo
Launchpad, Ubuntu, Debian
Upstream
Released (1.8.30)
Ubuntu 20.04 LTS (Focal Fossa)
Released (1.8.31-1ubuntu1)
Ubuntu 18.04 LTS (Bionic Beaver) Not vulnerable

Ubuntu 16.04 ESM (Xenial Xerus) Not vulnerable

Ubuntu 14.04 ESM (Trusty Tahr) Not vulnerable

Patches:
Upstream: https://www.sudo.ws/repos/sudo/rev/ebdbb5c7f60b

Notes

AuthorNote
mdeslaur
upstream sudo has disputed this CVE, sudo works as intended and
as documented, so marking this as not-affected.

References

Bugs