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CVE-2017-16837

Published: 16 November 2017

Certain function pointers in Trusted Boot (tboot) through 1.9.6 are not validated and can cause arbitrary code execution, which allows local users to overwrite dynamic PCRs of Trusted Platform Module (TPM) by hooking these function pointers.

Priority

Medium

Cvss 3 Severity Score

7.8

Score breakdown

Status

Package Release Status
tboot
Launchpad, Ubuntu, Debian
artful Ignored
(end of life)
bionic Needed

cosmic
Released (1.9.7-0ubuntu1)
disco
Released (1.9.7-0ubuntu1)
eoan
Released (1.9.7-0ubuntu1)
focal
Released (1.9.7-0ubuntu1)
groovy
Released (1.9.7-0ubuntu1)
hirsute
Released (1.9.7-0ubuntu1)
impish
Released (1.9.7-0ubuntu1)
jammy
Released (1.9.7-0ubuntu1)
kinetic
Released (1.9.7-0ubuntu1)
lunar
Released (1.9.7-0ubuntu1)
mantic
Released (1.9.7-0ubuntu1)
noble
Released (1.9.7-0ubuntu1)
trusty Does not exist
(trusty was needed)
upstream
Released (1.9.7-0ubuntu1)
xenial Needed

zesty Ignored
(end of life)

Severity score breakdown

Parameter Value
Base score 7.8
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H