Fabrice Bellard QEMU 1.7.0 scoop_gpio_handler_update memory corruption

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.
5.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Fabrice Bellard QEMU 1.7.0. Impacted is the function scoop_gpio_handler_update. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2013-4540. No exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Fabrice Bellard QEMU 1.7.0 (Virtualization Software). It has been declared as problematic. This vulnerability affects the function scoop_gpio_handler_update. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in scoop_gpio_handler_update in QEMU before 1.7.2 might allow remote attackers to execute arbitrary code via a large (1) prev_level, (2) gpio_level, or (3) gpio_dir value in a savevm image.

The weakness was disclosed 02/18/2014 by Petr Matousek as Bug 1066386 as confirmed bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability was named CVE-2013-4540 since 06/12/2013. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 74047 (Fedora 20 : qemu-1.6.2-5.fc20 (2014-6288)), 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 167282 (OpenSuSE Security Update for xen (openSUSE-SU-2014:1279-1)).

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 (93239), Tenable (74047), SecurityFocus (BID 67483†), OSVDB (106043†) and Vulnerability Center (SBV-47062†). The entries VDB-13023, VDB-13254, VDB-13266 and VDB-13267 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Not Affected

  • Red Hat Enterprise Linux 5/6

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 74047
Nessus Name: Fedora 20 : qemu-1.6.2-5.fc20 (2014-6288)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for qemu FEDORA-2014-6288
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: git.qemu.org

Timelineinfo

06/12/2013 🔍
02/18/2014 +251 days 🔍
02/18/2014 +0 days 🔍
05/16/2014 +87 days 🔍
05/19/2014 +3 days 🔍
05/22/2014 +3 days 🔍
11/04/2014 +166 days 🔍
11/13/2014 +9 days 🔍
06/20/2021 +2411 days 🔍

Sourcesinfo

Vendor: bellard.org

Advisory: Bug 1066386
Researcher: Petr Matousek
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-4540 (🔍)
GCVE (CVE): GCVE-0-2013-4540
GCVE (VulDB): GCVE-100-13282

OVAL: 🔍

X-Force: 93239 - QEMU scoop_gpio_handler_update() buffer overflow, Medium Risk
SecurityFocus: 67483 - QEMU Multiple Memory Corruption Vulnerabilities
OSVDB: 106043
Vulnerability Center: 47062 - QEMU Prior to 1.7.2 Remote Code Execution in scoop_gpio_handler_update, High

See also: 🔍

Entryinfo

Created: 05/22/2014 12:07
Updated: 06/20/2021 08:33
Changes: 05/22/2014 12:07 (76), 06/12/2017 08:09 (7), 06/20/2021 08:33 (3)
Complete: 🔍
Cache ID: 216:BC8:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!