VDB-131047 · CVE-2018-20240 · BID 107128

Atlassian FishEye/Crucible up to 4.6.x Administrative Linker href 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.
3.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Atlassian FishEye and Crucible up to 4.6.x. It has been rated as problematic. This issue affects some unknown processing of the component Administrative Linker. This manipulation of the argument href as part of Parameter causes cross site scripting. This vulnerability is tracked as CVE-2018-20240. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Atlassian FishEye and Crucible up to 4.6.x (Programming Tool Software). It has been declared as problematic. Affected by this vulnerability is an unknown function of the component Administrative Linker. The manipulation of the argument href as part of a Parameter leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is:

The administrative linker functionality in Atlassian Fisheye and Crucible before version 4.7.0 allows remote attackers to inject arbitrary HTML or JavaScript via a cross site scripting (XSS) vulnerability in the href parameter.

The bug was discovered 02/14/2019. The weakness was disclosed 02/20/2019 (Website). It is possible to read the advisory at jira.atlassian.com. This vulnerability is known as CVE-2018-20240 since 12/19/2018. The attack can be launched remotely. The successful exploitation requires a single authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 6 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 13422 (Atlassian Fisheye and Crucible Cross-Site Scripting Vulnerablity (CRUC-8381,FE-7163,CRUC-8380,FE-7162)).

Upgrading to version 4.7.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 107128†). The entry VDB-131048 is pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Programming Tool Software

Vendor

Atlassian

Name

Version

License

free

Website

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

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.7

VulDB Base Score: 2.7
VulDB Temp Score: 2.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

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

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FishEye/Crucible 4.7.0

Timelineinfo

12/19/2018 🔍
02/14/2019 +57 days 🔍
02/14/2019 +0 days 🔍
02/20/2019 +6 days 🔍
02/21/2019 +1 days 🔍
05/11/2020 +445 days 🔍

Sourcesinfo

Vendor: atlassian.com

Advisory: jira.atlassian.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-20240 (🔍)
GCVE (CVE): GCVE-0-2018-20240
GCVE (VulDB): GCVE-100-131047
SecurityFocus: 107128 - Atlassian FishEye and Crucible Multiple Cross Site Scripting Vulnerabilities

See also: 🔍

Entryinfo

Created: 02/21/2019 08:00
Updated: 05/11/2020 16:40
Changes: 02/21/2019 08:00 (65), 05/11/2020 16:40 (4)
Complete: 🔍
Cache ID: 216::103