Cross-site scripting in Nextcloud server



| Updated: 2020-08-08
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2017-7855
CWE-ID CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Nextcloud Server
Client/Desktop applications / Messaging software

Vendor Nextcloud

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Cross-site scripting

EUVDB-ID: #VU38373

Risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-7855

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

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

In the webmail component in IceWarp Server 11.3.1.5, there was an XSS vulnerability discovered in the "language" parameter.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Nextcloud Server: 11.3.1.5

CPE2.3 External links

https://technical.nttsecurity.com/post/102eegq/cookies-are-delicious


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.



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