#VU55058 Improper Verification of Cryptographic Signature in Oracle GraalVM Enterprise Edition - CVE-2021-2369

Vulnerability identifier: #VU55058

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-2369

CWE-ID: CWE-347

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Oracle GraalVM Enterprise Edition
Server applications / Virtualization software

Vendor: Oracle

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an error in JAR validation implementation. A remote attacker can modify the signed JAR file in a way it will be considered as signed.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Oracle GraalVM Enterprise Edition: 20.3.2 - 21.1.0

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External links
https://www.oracle.com/security-alerts/cpujul2021.html

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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.