TBOOT up to 1.8.1 Boot Loader loader.c tboot input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in TBOOT up to 1.8.1. This issue affects some unknown processing of the file loader.c of the component Boot Loader. The manipulation of the argument tboot as part of Parameter results in input validation. This vulnerability was named CVE-2014-5118. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in TBOOT up to 1.8.1. Affected is an unknown function of the file loader.c of the component Boot Loader. The manipulation of the argument tboot as part of a Parameter leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on integrity, and availability. CVE summarizes:

A Security Bypass Vulnerability exists in TBOOT before 1.8.2 in the boot loader module when measuring commandline parameters.

The bug was discovered 07/24/2014. The weakness was presented 11/18/2019 by James Blake. This vulnerability is traded as CVE-2014-5118 since 07/30/2014. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 77223 (Fedora 19 : tboot-1.8.2-1.fc19 (2014-9104)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 122555 (Fedora Security Update for tboot (FEDORA-2014-9104)).

Upgrading to version 1.8.2 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (77223), SecurityFocus (BID 68960†) and OSVDB (109660†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.8
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 77223
Nessus Name: Fedora 19 : tboot-1.8.2-1.fc19 (2014-9104)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for tboot FEDORA-2014-9114
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: TBOOT 1.8.2

Timelineinfo

07/24/2014 🔍
07/30/2014 +6 days 🔍
07/30/2014 +0 days 🔍
08/01/2014 +2 days 🔍
08/16/2014 +15 days 🔍
11/18/2019 +1920 days 🔍
11/19/2019 +1 days 🔍
12/15/2024 +1853 days 🔍

Sourcesinfo

Advisory: lists.fedoraproject.org
Researcher: James Blake
Status: Confirmed

CVE: CVE-2014-5118 (🔍)
GCVE (CVE): GCVE-0-2014-5118
GCVE (VulDB): GCVE-100-145908
X-Force: 95063
SecurityFocus: 68960 - Trusted Boot 'loader.c' Security Bypass Vulnerability
OSVDB: 109660

Entryinfo

Created: 11/19/2019 06:35
Updated: 12/15/2024 07:04
Changes: 11/19/2019 06:35 (45), 11/19/2019 06:40 (31), 02/23/2024 14:22 (5), 12/15/2024 07:04 (20)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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