Server-Side Request Forgery (SSRF) in EspoCRM

1) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU85039

Risk: Low

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

CVE-ID: CVE-2023-46736

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in the /Attachment/fromImageUrl endpoint. A remote user can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

EspoCRM: 8.0.0 - 8.0.2

External links

http://github.com/espocrm/espocrm/security/advisories/GHSA-g955-rwxx-jvf6
http://github.com/espocrm/espocrm/commit/c536cee6375e2088f961af13db7aaa652c983072
http://owasp.org/Top10/A10_2021-Server-Side_Request_Forgery_%28SSRF%29/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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