libvirt QEMU Reply qemu/qemu_monitor.c resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in libvirt. It has been declared as problematic. This impacts an unknown function of the file qemu/qemu_monitor.c of the component QEMU Reply Handler. The manipulation results in resource management. This vulnerability is known as CVE-2018-5748. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in libvirt (Virtualization Software) (version now known). Affected is some unknown processing of the file qemu/qemu_monitor.c of the component QEMU Reply Handler. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

qemu/qemu_monitor.c in libvirt allows attackers to cause a denial of service (memory consumption) via a large QEMU reply.

The bug was discovered 01/12/2018. The weakness was published 01/25/2018 (Website). The advisory is shared for download at redhat.com. This vulnerability is traded as CVE-2018-5748 since 01/17/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 13 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 106928 (Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : libvirt vulnerabilities (USN-3576-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277201 (Fedora Security Update for libvirt (FEDORA-2018-b22d46eabb)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (106928) and SecurityFocus (BID 102825†). Similar entry is available at VDB-113748. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 106928
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS / 17.10 : libvirt vulnerabilities (USN-3576-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841645
OpenVAS Name: Ubuntu Update for libvirt USN-3576-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

01/12/2018 🔍
01/17/2018 +5 days 🔍
01/25/2018 +8 days 🔍
01/25/2018 +0 days 🔍
01/26/2018 +1 days 🔍
02/20/2018 +25 days 🔍
02/21/2018 +1 days 🔍
02/02/2023 +1807 days 🔍

Sourcesinfo

Advisory: USN-3576-1
Status: Confirmed

CVE: CVE-2018-5748 (🔍)
GCVE (CVE): GCVE-0-2018-5748
GCVE (VulDB): GCVE-100-112440

OVAL: 🔍

SecurityFocus: 102825

See also: 🔍

Entryinfo

Created: 01/26/2018 07:56
Updated: 02/02/2023 17:12
Changes: 01/26/2018 07:56 (74), 12/27/2019 16:33 (3), 02/02/2023 17:05 (4), 02/02/2023 17:12 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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