QEMU up to 2.8.x TCG Mode target/i386/translate.c disas_insn access control ⚔ [Disputed]

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in QEMU up to 2.8.x. Affected by this vulnerability is the function disas_insn of the file target/i386/translate.c of the component TCG Mode. Performing a manipulation results in access control. This vulnerability is reported as CVE-2017-8284. The attack requires a local approach. No exploit exists. The real existence of this vulnerability is still doubted at the moment. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in QEMU up to 2.8.x (Virtualization Software). It has been classified as problematic. This affects the function disas_insn of the file target/i386/translate.c of the component TCG Mode. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

** 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."

The weakness was disclosed 04/26/2017 (Website). The advisory is shared at bugs.chromium.org. This vulnerability is uniquely identified as CVE-2017-8284 since 04/26/2017. An attack has to be approached locally. Required for exploitation is a authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The real existence of this vulnerability is still doubted at the moment.

Upgrading to version 2.9.0 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CNA Base Score: 7.0
CNA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: QEMU 2.9.0
Patch: github.com

Timelineinfo

04/26/2017 🔍
04/26/2017 +0 days 🔍
04/26/2017 +0 days 🔍
04/26/2017 +0 days 🔍
08/05/2024 +2658 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: 30663fd26c0307e414622c7a8607fbc04f92ec14
Status: Not defined
Disputed: 🔍

CVE: CVE-2017-8284 (🔍)
GCVE (CVE): GCVE-0-2017-8284
GCVE (VulDB): GCVE-100-100617
OSVDB: - CVE-2017-8284 - QEMU - Privilege Escalation Issue

Entryinfo

Created: 04/26/2017 23:27
Updated: 08/05/2024 21:17
Changes: 04/26/2017 23:27 (60), 09/21/2020 15:56 (1), 12/02/2022 10:49 (5), 08/05/2024 21:17 (26)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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