XSS in Horde Gollem

1) Cross-site scripting

EUVDB-ID: #VU47121

Risk: Low

CVSSv3.1: 5.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:U/RC:C]

CVE-ID: CVE-2020-8034

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

Exploit availability: No

Description

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

The vulnerability exists due to insufficient sanitization of user-supplied data when processing data passed via the HTTP GET dir parameter in the browser functionality, affecting breadcrumb output. 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

Cybersecurity Help is currently unaware of any official solution to address this vulnerability..

Vulnerable software versions

Gollem: 3.0.0 - 3.0.11

External links

http://github.com/horde/gollem/blob/95b2a4212d734f1b27aaa7a221d2fa1370d2631f/docs/CHANGES
http://github.com/horde/gollem/commits/master
http://lists.debian.org/debian-lts-announce/2020/05/msg00033.html
http://lists.horde.org/archives/announce/2020/001289.html
http://lists.horde.org/archives/gollem/Week-of-Mon-20200420/001990.html

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.