Improper Neutralization of Special Elements in Output Used by a Downstream Component in EmbedThis GoAhead

1) Improper Neutralization of Special Elements in Output Used by a Downstream Component

EUVDB-ID: #VU35485

Risk: High

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-16645

CWE-ID: CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Exploit availability: No

Description

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

An issue was discovered in Embedthis GoAhead 2.5.0. Certain pages (such as goform/login and config/log_off_page.htm) create links containing a hostname obtained from an arbitrary HTTP Host header sent by an attacker. This could potentially be used in a phishing attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

GoAhead: 2.5.0

External links

http://packetstormsecurity.com/files/154652/GoAhead-2.5.0-Host-Header-Injection.html
http://github.com/Ramikan/Vulnerabilities/blob/master/GoAhead%20Web%20server%20HTTP%20Header%20Injection

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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