Fabrice Bellard QEMU VGA Emulator vga.c information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.6$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Fabrice Bellard QEMU. This affects an unknown function of the file vga.c of the component VGA Emulator. Such manipulation leads to information disclosure. This vulnerability is referenced as CVE-2014-3615. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Fabrice Bellard QEMU (Virtualization Software) (affected version unknown) and classified as problematic. Affected by this issue is an unknown functionality of the file vga.c of the component VGA Emulator. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

The VGA emulator in QEMU allows local guest users to read host memory by setting the display to a high resolution.

The weakness was published 08/26/2014 by Prasad J Pandit as vbe: rework sanity checks as confirmed git commit (GIT Repository). The advisory is shared for download at git.qemu.org. This vulnerability is handled as CVE-2014-3615 since 05/14/2014. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

The vulnerability scanner Nessus provides a plugin with the ID 77613 (Fedora 20 : qemu-1.6.2-8.fc20 (2014-10445)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370030 (Citrix XenServer Security Update (CTX200892)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu.org. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (95785), Tenable (77613), SecurityFocus (BID 69654†), Secunia (SA61829†) and SecurityTracker (ID 1030817†). seclists.org is providing further details. Similar entries are available at VDB-68346, VDB-81154, VDB-81155 and VDB-91040. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 77613
Nessus Name: Fedora 20 : qemu-1.6.2-8.fc20 (2014-10445)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703044
OpenVAS Name: Debian Security Advisory DSA 3044-1 (qemu-kvm - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: ab9509cceabef28071e41bdfa073083859c949a7

Timelineinfo

05/14/2014 🔍
08/26/2014 +104 days 🔍
08/26/2014 +0 days 🔍
09/08/2014 +13 days 🔍
09/09/2014 +1 days 🔍
09/09/2014 +0 days 🔍
09/11/2014 +2 days 🔍
10/23/2014 +42 days 🔍
11/01/2014 +9 days 🔍
04/14/2015 +164 days 🔍
06/17/2015 +64 days 🔍
02/15/2022 +2435 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: vbe: rework sanity checks
Researcher: Prasad J Pandit
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-3615 (🔍)
GCVE (CVE): GCVE-0-2014-3615
GCVE (VulDB): GCVE-100-67460

OVAL: 🔍

X-Force: 95785 - QEMU vga.c information disclosure, Medium Risk
SecurityFocus: 69654 - QEMU 'vga.c' Information Disclosure Vulnerability
Secunia: 61829 - Red Hat update for qemu-kvm, Not Critical
SecurityTracker: 1030817 - QEMU VGA Emulator Bug Lets Local Guest Users Obtain Potentially Sensitive Information from the Host System
Vulnerability Center: 50591 - QEMU Local Information Disclosure due to an Error in the VGA Emulator, Low

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 09/09/2014 15:43
Updated: 02/15/2022 10:01
Changes: 09/09/2014 15:43 (89), 06/30/2017 19:43 (3), 02/15/2022 09:56 (3), 02/15/2022 10:01 (1)
Complete: 🔍
Cache ID: 216:380:103

Once again VulDB remains the best source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!