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Debian Security Advisory DSA-4543-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
October 14, 2019                      https://www.debian.org/security/faq
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Package        : sudo
CVE ID         : CVE-2019-14287
Debian Bug     : 942322

Joe Vennix discovered that sudo, a program designed to provide limited
super user privileges to specific users, when configured to allow a user
to run commands as an arbitrary user via the ALL keyword in a Runas
specification, allows to run commands as root by specifying the user ID
- -1 or 4294967295. This could allow a user with sufficient sudo
privileges to run commands as root even if the Runas specification
explicitly disallows root access.

Details can be found in the upstream advisory at
https://www.sudo.ws/alerts/minus_1_uid.html .

For the oldstable distribution (stretch), this problem has been fixed
in version 1.8.19p1-2.1+deb9u1.

For the stable distribution (buster), this problem has been fixed in
version 1.8.27-1+deb10u1.

We recommend that you upgrade your sudo packages.

For the detailed security status of sudo please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/sudo

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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