VDB-227123 · CVE-2015-5745 · Qualys 168944

QEMU up to 2.3.x Virtio Control Message virtio-serial-bus.c send_control_msg buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in QEMU up to 2.3.x. The affected element is the function send_control_msg of the file hw/char/virtio-serial-bus.c of the component Virtio Control Message Handler. The manipulation leads to buffer overflow. This vulnerability is listed as CVE-2015-5745. The attack may be initiated remotely. In addition, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in QEMU up to 2.3.x (Virtualization Software). It has been rated as critical. This issue affects the function send_control_msg of the file hw/char/virtio-serial-bus.c of the component Virtio Control Message Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is availability. The summary by CVE is:

Buffer overflow in the send_control_msg function in hw/char/virtio-serial-bus.c in QEMU before 2.4.0 allows guest users to cause a denial of service (QEMU process crash) via a crafted virtio control message.

The weakness was presented 04/22/2023. It is possible to read the advisory at arista.com. The identification of this vulnerability is CVE-2015-5745 since 08/06/2015. The attack may be initiated remotely. The successful exploitation needs a simple authentication. Technical details as well as a public exploit are known.

The exploit is available at lists.fedoraproject.org. It is declared as proof-of-concept. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168944 (SUSE Enterprise Linux Security update for qemu (SUSE-SU-2016:1560-1)).

Upgrading to version 2.4.0 eliminates this vulnerability. Applying the patch 7882080388be5088e72c425b02223c02e6cb4295 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.2

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: QEMU 2.4.0
Patch: 7882080388be5088e72c425b02223c02e6cb4295

Timelineinfo

08/06/2015 🔍
04/22/2023 +2816 days 🔍
04/22/2023 +0 days 🔍
10/01/2024 +528 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: 7882080388be5088e72c425b02223c02e6cb4295
Status: Confirmed

CVE: CVE-2015-5745 (🔍)
GCVE (CVE): GCVE-0-2015-5745
GCVE (VulDB): GCVE-100-227123
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/22/2023 08:36
Updated: 10/01/2024 21:50
Changes: 04/22/2023 08:36 (63), 05/15/2023 17:11 (1), 10/01/2024 21:50 (17)
Complete: 🔍
Cache ID: 216::103

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