HOMEVULNERABILITIESCVE-2017-8284
HIGH

CVE-2017-8284

CWE-94Published: April 26, 2017· Updated: Jun 17, 2026

7.0
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2017-8284 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.0.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

qemu1 product(s)
qemu
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
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Official Patches & Advisories

PATCHhttps://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14
PATCHhttps://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14
ADVISORYhttps://bugs.chromium.org/p/project-zero/issues/detail?id=1122
ADVISORYhttps://bugs.chromium.org/p/project-zero/issues/detail?id=1122

All References (4)

→
https://bugs.chromium.org/p/project-zero/issues/detail?id=1122Issue Tracking · Third Party Advisory
→
https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14Issue Tracking · Patch · Third Party Advisory
→
https://bugs.chromium.org/p/project-zero/issues/detail?id=1122Issue Tracking · Third Party Advisory
→
https://github.com/qemu/qemu/commit/30663fd26c0307e414622c7a8607fbc04f92ec14Issue Tracking · Patch · Third Party Advisory

Quick Facts

CVE IDCVE-2017-8284
CVSS Score7.0 / 10
SeverityHIGH
WeaknessCWE-94
CISA KEVNo
Affected1 vendor(s)
PublishedApr 26, 2017

Related CVEs (CWE-94)

CVE-2021-29475
10.0
CVE-2014-3804
10.0
CVE-2026-48836
10.0
CVE-2021-23281
10.0
CVE-2023-2583
10.0
CVE-2014-5210
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2017-8284 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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