#VU46239 Improper Privilege Management in kotlin - CVE-2020-15824

Vulnerability identifier: #VU46239

Vulnerability risk: High

CVSSv4.0: 6.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-15824

CWE-ID: CWE-269

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
kotlin

Vendor: Google

Description

The vulnerability allows a remote authenticated user to execute arbitrary code.

In JetBrains Kotlin from 1.4-M1 to 1.4-RC (as Kotlin 1.3.7x is not affected by the issue. Fixed version is 1.4.0) there is a script-cache privilege escalation vulnerability due to kotlin-main-kts cached scripts in the system temp directory, which is shared by all users by default.

Mitigation
Install update from vendor's website.

Vulnerable software versions

kotlin: 1.4.0

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External links
https://blog.jetbrains.com/blog/2020/08/06/jetbrains-security-bulletin-q2-2020/

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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.