QEMU Floppy Disk Controller memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

A vulnerability classified as problematic has been found in QEMU (Virtualization Software) (unknown version). Affected is an unknown code block of the component Floppy Disk Controller. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other unspecified commands, aka VENOM.

The weakness was disclosed 05/13/2015 with CrowdStrike as Bug 1218611 as confirmed bug report (Bugzilla). The advisory is available at bugzilla.redhat.com. This vulnerability is traded as CVE-2015-3456 since 04/29/2015. Local access is required to approach this attack. The requirement for exploitation is a authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Marcus Meissner and been published 5 days after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 83484 (OracleVM 2.2 : xen (OVMSA-2015-0059) (Venom)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family OracleVM Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175401 (Debian Security Update for qemu (DSA 3259-1)).

The vulnerability is also documented in the databases at X-Force (103116), Tenable (83484) and Exploit-DB (37053).

Affected

  • QEMU
  • Xen 4.5.x

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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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

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Marcus Meissner
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 83484
Nessus Name: OracleVM 2.2 : xen (OVMSA-2015-0059) (Venom)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703259
OpenVAS Name: Debian Security Advisory DSA 3259-1 (qemu - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: e907746266721f305d67bc0718795fedee2e824c

Timelineinfo

04/29/2015 🔍
05/13/2015 +14 days 🔍
05/13/2015 +0 days 🔍
05/13/2015 +0 days 🔍
05/15/2015 +2 days 🔍
05/15/2015 +0 days 🔍
05/18/2015 +3 days 🔍
05/18/2015 +0 days 🔍
05/18/2015 +0 days 🔍
07/19/2015 +62 days 🔍
05/17/2022 +2494 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: Bug 1218611
Organization: CrowdStrike
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-3456 (🔍)
OVAL: 🔍

X-Force: 103116 - QEMU FDC buffer overflow
SecurityTracker: 1032306
Vulnerability Center: 51415 - Xen 4.5.x and Earlier Local DoS or Code Execution Vulnerabilities - CVE-2015-3456, High
SecurityFocus: 74640 - QEMU 'hw/block/fdc.c' VENOM Remote Memory Corruption Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/15/2015 11:11
Updated: 05/17/2022 16:06
Changes: 05/15/2015 11:11 (73), 07/13/2017 10:47 (11), 05/17/2022 16:00 (5), 05/17/2022 16:06 (1)
Complete: 🔍

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