ONLYOFFICE Document Server 5.5.0 libxcb.so.1 Office Document XML xml injection

CVSS Meta Temp Score
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CTI Interest Score
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8.5$0-$5k0.00

Summaryinfo

A vulnerability was found in ONLYOFFICE Document Server 5.5.0. It has been classified as critical. This impacts an unknown function in the library libxcb.so.1. The manipulation as part of Office Document leads to xml injection (XML). This vulnerability is uniquely identified as CVE-2020-11535. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, has been found in ONLYOFFICE Document Server 5.5.0. This issue affects an unknown code block in the library libxcb.so.1. The manipulation as part of a Office Document leads to a xml injection vulnerability (XML). Using CWE to declare the problem leads to CWE-91. The product does not properly neutralize special elements that are used in XML, allowing attackers to modify the syntax, content, or commands of the XML before it is processed by an end system. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in ONLYOFFICE Document Server 5.5.0. An attacker can craft a malicious .docx file, and exploit XML injection to enter an attacker-controlled parameter into the x2t binary, to rewrite this binary and/or libxcb.so.1, and execute code on a victim's server.

The weakness was disclosed 04/15/2020. The identification of this vulnerability is CVE-2020-11535 since 04/04/2020. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-153769, VDB-153768 and VDB-153766 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Name: XML
Class: Xml injection / XML
CWE: CWE-91 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/04/2020 🔍
04/15/2020 +11 days 🔍
04/16/2020 +1 days 🔍
05/27/2024 +1502 days 🔍

Sourcesinfo

Advisory: gist.github.com
Status: Not defined

CVE: CVE-2020-11535 (🔍)
GCVE (CVE): GCVE-0-2020-11535
GCVE (VulDB): GCVE-100-153767
See also: 🔍

Entryinfo

Created: 04/16/2020 12:33
Updated: 05/27/2024 07:14
Changes: 04/16/2020 12:33 (38), 04/16/2020 12:38 (17), 05/27/2024 07:14 (17)
Complete: 🔍
Cache ID: 216::103

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