VDB-113124 · CVE-2018-6871 · RHSA-2018:0418

LibreOffice up to 6.0.1 COM.MICROSOFT.WEBSERVICE File credentials management

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in LibreOffice up to 6.0.1 and classified as problematic. Affected by this vulnerability is the function COM.MICROSOFT.WEBSERVICE. The manipulation results in credentials management (File). This vulnerability is cataloged as CVE-2018-6871. The attack may be launched remotely. Furthermore, there is an exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in LibreOffice up to 6.0.1 (Office Suite Software). Affected is the function COM.MICROSOFT.WEBSERVICE. The manipulation with an unknown input leads to a credentials management vulnerability (File). CWE is classifying the issue as CWE-255. This is going to have an impact on confidentiality. CVE summarizes:

LibreOffice through 6.0.1 allows remote attackers to read arbitrary files via =WEBSERVICE calls in a document, which use the COM.MICROSOFT.WEBSERVICE function.

The bug was discovered 02/07/2018. The weakness was shared 02/09/2018 (Website). The advisory is shared for download at cgit.freedesktop.org. This vulnerability is traded as CVE-2018-6871 since 02/09/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1552.

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 106835 (SUSE SLED12 Security Update : libreoffice (SUSE-SU-2018:0443-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277187 (Fedora Security Update for libreoffice (FEDORA-2018-3eb4d8e4c4)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 5 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (44022) and Tenable (106835). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Office Suite Software

Name

LibreOffice

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.3

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: File
Class: Credentials management / File
CWE: CWE-255
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 106835
Nessus Name: SUSE SLED12 Security Update : libreoffice (SUSE-SU-2018:0443-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 59235
OpenVAS Name: SuSE Update for libreoffice openSUSE-SU-2018:0446-1 (libreoffice)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: cgit.freedesktop.org

Timelineinfo

02/07/2018 🔍
02/09/2018 +2 days 🔍
02/09/2018 +0 days 🔍
02/09/2018 +0 days 🔍
02/10/2018 +1 days 🔍
02/14/2018 +4 days 🔍
02/15/2018 +1 days 🔍
12/18/2024 +2498 days 🔍