VDB-94923 · CVE-2016-6283 · EDB 40989

Atlassian Confluence 5.9.12 Attachment doeditattachment.action newFileName Persistent cross site scripting

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.
5.0	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Atlassian Confluence 5.9.12 and classified as problematic. This issue affects some unknown processing of the file /pages/doeditattachment.action of the component Attachment Handler. Performing a manipulation of the argument newFileName with the input <script>a lert(1)</script>file results in cross site scripting (Persistent). This vulnerability was named CVE-2016-6283. The attack may be initiated remotely. In addition, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Atlassian Confluence 5.9.12. This affects an unknown part of the file /pages/doeditattachment.action of the component Attachment Handler. The manipulation of the argument newFileName with the input value <script>a lert(1)</script>file leads to a cross site scripting vulnerability (Persistent). 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. The summary by CVE is:

Cross-site scripting (XSS) vulnerability in Atlassian Confluence before 5.10.6 allows remote attackers to inject arbitrary web script or HTML via the newFileName parameter to pages/doeditattachment.action.

The bug was discovered 01/03/2017. The weakness was presented 01/03/2017 by Heyder Andrade as Persisted Cross-Site Scripting (XSS) in Confluence Jira Software as not defined mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. This vulnerability is uniquely identified as CVE-2016-6283 since 07/22/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details and a public exploit are known. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

A public exploit has been developed by Heyder Andrade in HTTP POST Request and been published immediately after the advisory. The exploit is shared for download at seclists.org. It is declared as proof-of-concept. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11618 (EOL/Obsolete Software: Atlassian Confluence 3.5.x). The code used by the exploit is:

POST /pages/doeditattachment.action?pageId={pageId}&attachmentBean.fileName={filename} HTTP/1.1
Host: {confluence host}
Cookie: mywork.tab.tasks=false; JSESSIONID={redacted};
confluence.browse.space.cookie=space-templates
Connection: keep-alive
Content-Type: application/x-www-form-urlencoded
Content-Length: {redacted}

atl_token={atl_token}&pageId={pageId}&isFromPageView=false&newFileName=<script>alert(1)</script>file&newComment=&newContentType=application%2Foctet-stream&newParentPage=&confirm=Save

Upgrading to version 5.10.6 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (40989) and SecurityFocus (BID 95288†). See VDB-60813, VDB-82064, VDB-82065 and VDB-99500 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Atlassian

Name

Confluence

Version

5.9.12

License

free

Website

Vendor: https://www.atlassian.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.0

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Name: Persistent
Class: Cross site scripting / Persistent
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Heyder Andrade
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

OpenVAS ID: 103228
OpenVAS Name: Atlassian Confluence XSS Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: Confluence 5.10.6

Timelineinfo

07/07/2016 🔍
07/22/2016 +15 days 🔍
08/04/2016 +13 days 🔍
01/03/2017 +152 days 🔍
01/03/2017 +0 days 🔍
01/03/2017 +0 days 🔍
01/04/2017 +1 days 🔍
01/04/2017 +0 days 🔍
01/04/2017 +0 days 🔍
01/18/2017 +14 days 🔍
05/14/2026 +3402 days 🔍