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.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by a vulnerability that has been acknowledged by the vendor but will not be patched.

  - tboot: Incorrect validation of certain function pointers (CVE-2017-16837)

Note that Nessus has not tested for this issue but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - tboot: Incorrect validation of certain function pointers (CVE-2017-16837)

  - Trusted Boot (tboot) before 1.8.2 has a 'loader.c' Security Bypass Vulnerability (CVE-2014-5118)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

According to the version of the tboot package installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  - 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.(CVE-2017-16837)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the version of the tboot package installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerability :

  - 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.(CVE-2017-16837)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for tboot fixes the following issues: Security issue fixed :

  - CVE-2017-16837: Certain function pointers in Trusted     Boot (tboot) through 1.9.6 are notvalidated and can     cause arbitrary code execution, which allows local users     tooverwrite dynamic PCRs of Trusted Platform Module     (TPM) by h (bsc#1068390) Bug fixes :

  - Fixed failed trusted boot on some systems like Intel     Xeon 'Purley 8s' processors. The following error message     showed: 'TBOOT: wait-for-sipi loop timed-out'. Booting     continued but 'TXT measured launch' was wrongly reported     as FALSE. (bsc#1057555)

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for tboot fixes the following issues :

Security issues fixed :

  - CVE-2017-16837: Fix tbootfailed to validate a number of     immutable function pointers, which could allow an     attacker to bypass the chain of trust and execute     arbitrary code (boo#1068390).

  - Make tboot package compatible with OpenSSL 1.1.0 for     SLE-15 support (boo#1067229).

Bug fixes :

  - Update to new upstream version. See release notes for     details (1.9.6; 1.9.5, FATE#321510; 1.9.4, FATE#320665;
    1.8.3, FATE#318542) :

  - https://sourceforge.net/p/tboot/code/ci/default/tree/CHANGELOG

  - Fix some gcc7 warnings that lead to errors.
    (boo#1041264)

  - Fix wrong pvops kernel config matching (boo#981948) 

  - Fix a excessive stack usage pattern that could lead to     resets/crashes (boo#967441)

  - fixes a boot issue on Skylake (boo#964408)

  - Trim filler words from description; use modern macros     over shell vars.

  - Add reproducible.patch to call gzip -n to make build     fully reproducible.

ID	Name	Product	Family	Severity
199385	RHEL 7 : tboot (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
199370	RHEL 6 : tboot (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
149189	EulerOS 2.0 SP3 : tboot (EulerOS-SA-2021-1855)	Nessus	Huawei Local Security Checks	high
147611	EulerOS Virtualization 3.0.2.6 : tboot (EulerOS-SA-2021-1452)	Nessus	Huawei Local Security Checks	high
147122	EulerOS Virtualization 3.0.6.6 : tboot (EulerOS-SA-2021-1521)	Nessus	Huawei Local Security Checks	high
146150	EulerOS 2.0 SP5 : tboot (EulerOS-SA-2021-1236)	Nessus	Huawei Local Security Checks	high
104782	SUSE SLES12 Security Update : Recommended update for tboot (SUSE-SU-2017:3090-1)	Nessus	SuSE Local Security Checks	high
104771	openSUSE Security Update : tboot (openSUSE-2017-1308)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2017-16837

high

Tenable Plugins

high

high

high

high

high

high

high

high