SugarCRM Community Edition 6.5.26 YUI/FlashCanvas 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 (≈)
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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.
5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in SugarCRM Community Edition 6.5.26. It has been declared as problematic. Affected by this issue is some unknown functionality of the component YUI/FlashCanvas. Executing a manipulation can lead to cross site scripting. This vulnerability is handled as CVE-2018-17784. The attack can be executed remotely. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in SugarCRM Community Edition 6.5.26. This vulnerability affects some unknown processing of the component YUI/FlashCanvas. The manipulation with an unknown input 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. CVE summarizes:

Multiple vulnerabilities in YUI and FlashCanvas embedded in SugarCRM Community Edition 6.5.26 could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack on a targeted system.

The bug was discovered 09/28/2018. The weakness was released 10/10/2018 (Website). The advisory is shared for download at twitter.com. This vulnerability was named CVE-2018-17784 since 09/29/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

It is possible to download the exploit 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 12 days. During that time the estimated underground price was around $0-$5k.

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

The vulnerability is also documented in the vulnerability database at Exploit-DB (45594). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 6.1
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

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
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: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/28/2018 🔍
09/29/2018 +0 days 🔍
10/10/2018 +11 days 🔍
10/10/2018 +0 days 🔍
10/11/2018 +1 days 🔍
08/07/2025 +2492 days 🔍

Sourcesinfo

Advisory: twitter.com
Status: Not defined

CVE: CVE-2018-17784 (🔍)
GCVE (CVE): GCVE-0-2018-17784
GCVE (VulDB): GCVE-100-125236
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/11/2018 11:09
Updated: 08/07/2025 21:49
Changes: 10/11/2018 11:09 (57), 04/01/2020 17:49 (4), 08/07/2025 21:49 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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