Vulnerability identifier: #VU53926

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28588

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
RoboHelp
Universal components / Libraries / Software for developers

Vendor: Adobe

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Successful exploitation of the vulnerability may lead to system compromise.

Mitigation
Install update from vendor's website.

Vulnerable software versions

RoboHelp: 2019.0.1 - 2019.0.14

---

External links
http://helpx.adobe.com/security/products/robohelp-server/apsb21-44.html
http://www.zerodayinitiative.com/advisories/ZDI-21-660/

---

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.