VDB-110220 · CVE-2017-16856 · BID 102094

Atlassian Confluence up to 6.5.1 RSS Feed Macro cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.9$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Atlassian Confluence up to 6.5.1. Affected by this vulnerability is an unknown functionality of the component RSS Feed Macro. The manipulation results in cross site scripting. This vulnerability is known as CVE-2017-16856. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Atlassian Confluence up to 6.5.1. It has been classified as problematic. Affected is an unknown code block of the component RSS Feed Macro. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

The RSS Feed macro in Atlassian Confluence before version 6.5.2 allows remote attackers to inject arbitrary HTML or JavaScript via cross site scripting (XSS) vulnerabilities in various rss properties which were used as links without restriction on their scheme.

The bug was discovered 11/16/2017. The weakness was published 12/05/2017 (Website). The advisory is shared for download at jira.atlassian.com. This vulnerability is traded as CVE-2017-16856 since 11/16/2017. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability was handled as a non-public zero-day exploit for at least 19 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13262 (Atlassian Confluence Server Remote Code Execution Vulnerability).

Upgrading to version 6.5.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 102094†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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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OpenVAS ID: 831285
OpenVAS Name: Atlassian Confluence XSS Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Confluence 6.5.2

Timelineinfo

11/16/2017 🔍
11/16/2017 +0 days 🔍
12/05/2017 +19 days 🔍
12/05/2017 +0 days 🔍
12/05/2017 +0 days 🔍
12/05/2017 +0 days 🔍
01/25/2021 +1147 days 🔍

Sourcesinfo

Vendor: atlassian.com

Advisory: jira.atlassian.com
Researcher: Glenn 'devalias' Grant
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-16856 (🔍)
GCVE (CVE): GCVE-0-2017-16856
GCVE (VulDB): GCVE-100-110220
SecurityFocus: 102094 - Atlassian Confluence CVE-2017-16856 Multiple Cross Site Scripting Vulnerabilities

Entryinfo

Created: 12/05/2017 21:45
Updated: 01/25/2021 17:44
Changes: 12/05/2017 21:45 (66), 12/12/2019 09:23 (4), 01/25/2021 17:44 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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