CVE-2017-8284: Code Injection
First published: Wed Apr 26 2017(Updated: )
** DISPUTED ** The disas_insn function in target/i386/translate.c in QEMU before 2.9.0, when TCG mode without hardware acceleration is used, does not limit the instruction size, which allows local users to gain privileges by creating a modified basic block that injects code into a setuid program, as demonstrated by procmail. NOTE: the vendor has stated "this bug does not violate any security guarantees QEMU makes."
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| QEMU KVM | <=2.8.1.1 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2017-8284?
CVE-2017-8284 is considered to be of medium severity due to its potential for privilege escalation.
How do I fix CVE-2017-8284?
To fix CVE-2017-8284, you should upgrade QEMU to version 2.9.0 or later.
What versions of QEMU are affected by CVE-2017-8284?
QEMU versions prior to 2.9.0, specifically those up to 2.8.1.1, are affected by CVE-2017-8284.
Who can exploit CVE-2017-8284?
Local users with access to a setuid program can potentially exploit CVE-2017-8284.
What is the nature of the vulnerability in CVE-2017-8284?
CVE-2017-8284 is a vulnerability that allows local users to execute arbitrary code by manipulating instruction size in QEMU.
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