#VU83981 Improper access control in Quarkus - CVE-2023-6393

Vulnerability identifier: #VU83981

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-6393

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Quarkus
Server applications / Frameworks for developing and running applications

Vendor: Red Hat Inc.

Description

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the Quarkus Cache Runtime. When request processing utilizes a Uni cached using @CacheResult and the cached Uni reuses the initial "completion" context, the processing switches to the cached Uni instead of the request context. A remote user can send a specially crafted request to the server and obtain information that belongs to another user.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Quarkus: 2.13.0-CR1 - 2.13.8

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External links
https://access.redhat.com/security/cve/CVE-2023-6393
https://bugzilla.redhat.com/show_bug.cgi?id=2253113

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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.