#VU45986 Path traversal in Icinga Web 2 - CVE-2020-24368

Vulnerability identifier: #VU45986

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-24368

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Icinga Web 2
Other software / Other software solutions

Vendor: www.icinga.org

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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Icinga Web 2: 2.0.0, 2.1.0 - 2.1.4, 2.2.0 - 2.2.2, 2.3.0 - 2.3.4, 2.4.0 - 2.4.2, 2.5.0 - 2.5.3, 2.6.0 - 2.6.3, 2.7.0 - 2.7.3, 2.8.0 - 2.8.1

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External links
https://github.com/Icinga/icingaweb2/blob/master/CHANGELOG.md
https://github.com/Icinga/icingaweb2/issues/4226
https://icinga.com/2020/08/19/icinga-web-security-release-v2-6-4-v2-7-4-and-v2-8-2/
https://www.debian.org/security/2020/dsa-4747

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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.