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Vulnerability CVE-2017-8284
Published: 2017-04-26
| Description: |
** 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." |
Type:
CWE-94 (Improper Control of Generation of Code ('Code Injection'))
CVSS2 => (AV:L/AC:M/Au:N/C:C/I:C/A:C)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
6.9/10 |
10/10 |
3.4/10 |
| Exploit range |
Attack complexity |
Authentication |
Local |
Medium |
No required |
| Confidentiality impact |
Integrity impact |
Availability impact |
Complete |
Complete |
Complete |
References: |
https://bugs.chromium.org/p/project-zero/issues/detail?id=1122
https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14
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