Multiple vulnerabilities in Open-Xchange App Suite

Published: 2018-07-03

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-9997 CVE-2018-9998
CWE-ID	CWE-79 CWE-611
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Open-Xchange App Suite Client/Desktop applications / Software for system administration
Vendor	Open-Xchange Inc

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU13545

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-9997

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Update to versions 7.6.3-rev37, 7.8.2-rev40, 7.8.3-rev48, 7.8.4-rev28.

Vulnerable software versions

Open-Xchange App Suite: before 7.8.4-rev28

External links

http://seclists.org/fulldisclosure/2018/Jul/12

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) XXE attack

EUVDB-ID: #VU13546

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-9998

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')