VULNERABILITY INTELLIGENCE

CVE-2017-8284

CVSS score7 HIGH

EPSS probability0.43%

CISA KEVNot currently listed

Published2017-04-26

Last modified2026-06-17

CVSS vectorCVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

CWE-94: Improper Control of Generation of Code ('Code Injection')

Primary references

cve@mitre.org — Issue Tracking, Third Party Advisory
cve@mitre.org — Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Patch, Third Party Advisory