#VU66501 Incomplete List of Disallowed Inputs in Kotlin Ktor - CVE-2022-38179

Vulnerability identifier: #VU66501

Vulnerability risk: Medium

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-38179

CWE-ID: CWE-184

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Kotlin Ktor
Server applications / Frameworks for developing and running applications

Vendor: JetBrains s.r.o.

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to incomplete list of disallowed inputs. A remote attacker can perform a reflect file download attack and gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Kotlin Ktor: 2.0.0 - 2.0.3

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External links
https://www.jetbrains.com/privacy-security/issues-fixed/
https://github.com/ktorio/ktor/pull/3110

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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.