Remote code injection vulnerability

Summary

A weakness has been identified in antlr ANTLR4 up to 4.13.2. Affected is an unknown function of the file tool/src/org/antlr/v4/codegen/model/OutputFile.java of the component Grammar Action Block Handler. Executing a manipulation can lead to code injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way. A flaw was found in ANTLR4. A remote attacker could exploit a weakness within the Grammar Action Block Handler component by executing a manipulation. This vulnerability allows for code injection, which can lead to the execution of arbitrary code on the affected system. This is an Important vulnerability. A remote code injection flaw exists in the ANTLR4 Grammar Action Block Handler, which could allow an unauthenticated attacker to execute arbitrary code. The ability for remote exploitation and the public availability of exploit details elevate the risk, making this a critical concern for Red Hat products that incorporate ANTLR4 and process untrusted input. Red Hat severity: Important — CVSS 7.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L). Weakness: CWE-94. No fixing RHSA erratum has published yet; monitor the Red Hat CVE page and patch when it ships.